EP1344184A1 - Network-based system - Google Patents

Abstract

In a method for a person to carry out an operation in a network-based system, for example a payment, concerning goods or services indicated on a product, the person gives an instruction to the system to the effect that the operation is to be carried out using person-specific information previously stored in the system, by reading off a position-coding pattern in an operation field on the product using a hand-held device. The operation field is provided with a position-coding pattern that codes coordinates that represent said instruction in the system. The position-coding pattern makes it possible for the person to record electronically graphical information, for example a message or a specification of the operation, which is sent to a party in the system.

Description

NETWORK-BASED SYSTEM

Field of the Invention

This invention relates to different aspects of a network-based system for carrying out operations concerning goods or services that are indicated on a product and more specifically to a method, a computer program, a device, a system and a product that can be used in this connection. Background Art

There is a trend towards increased mobility in today's society. People want, for example, to be able to communicate, retrieve information, order goods and services, and carry out various tasks regardless of where they are and independent of access to stationary devices. In order to meet this requirement, a number of portable and hand-held devices have been developed, such as portable computers, mobile telephones, PDAs and reading pens. A further category of hand-held devices is electronic pens, using which it is possible to write and draw in the same way as with an ordinary pen, but which at the same time electronically record what is written by means of a sensor, for example a CCD or an accelerometer . The Applicant has developed an electronic pen that is intended to be used on a surface which is provided with a position-coding pattern and which has an optical sensor which continually reads off the position-coding pattern in order to record what is written electronically in the form of coordinates. The position-coding pattern and the pen is described in e.g. WO 01/26032, which is hereby incorporated by reference . A pen of a similar type is described in US 5,852,434.

The Applicant's pen can, among other things, be used to write messages and to send these via a mobile phone to another mobile phone or via the mobile phone and the Internet to a computer. There is, however, a wish to be able to use an electronic pen for purposes other than recording text and sending messages. Summary of the Invention

This wish is fulfilled completely or partially by a method according to claim 1, a method according to claim 6, a memory medium according to claim 20, a handheld device according to claim 21, a system according to claim 22 and a product according to claim 24.

According to a first aspect, the present invention thus relates to a method enabling a person to initiate an operation in a network-based system regarding goods or services that are indicated on a product . The method is characterized by the step of giving an instruction to the system that the operation is to be carried out using person-specific information previously stored in the system, by reading off a position-coding pattern in an operation field on the product using a^' hand-held device, which operation field is provided with a position-coding pattern which codes coordinates representing said in- struction in the system.

According to this method, a person can thus initiate an operation, for example make a payment, simply by reading off a position-coding pattern. No information needs to be written down or entered in any other way, no information needs to be memorized and no information needs to be sent on paper which can be copied and end up in the wrong hands. By reading off the position-coding pattern the person gives an instruction to the system that a particular operation is to be carried out and that person-specific information previously stored in the system is to be used to carry out the operation. This is the simplest possible way of carrying out an operation in a network-based system.

The operation can be carried out in a completely mobile way. All that is required is a hand-held device for reading off the position-coding pattern. The communi- cation with other units in the network-based system can take place immediately or at a later time.

The operation concerns goods or services in a wide sense. The goods or services can already have been de- livered or can be about to be delivered in the future as a result of the operation. The operation can preferably consist of a payment for the goods or services, in which case the person-specific information can be an account from which the payment is to be made. It can, however, also consist of an order for goods, for example information, in which case the person-specific information is the person's address, electronic or physical, to which the information is to be sent . It can also consist of an electronic signing of a document, in which case the person-specific information is the person's signature in digital format. A further example is subscribing to shares, which requires access to more than one type of person-specific information, for example civic registration number and address. A person skilled in the art can find further examples of operations that require access to person-specific information that is of the nature that it is not changed often but can be previously stored in the network-based system in order to be used by various parties in the system for the carrying out of operations concerning various goods and services when the person so permits .

The goods or services are indicated on the product . By this it is meant that there is information on the product so that the user can understand which goods or ser- vices are intended and what effect reading off .the position-coding pattern in the operation field will have. The product can be any product on which one or more items of goods or services can be indicated and on which a position-coding pattern can be applied in such a way that it can be read off by a hand-held device which is intended for this purpose. The product is preferably a physical product and can, for example, be a sheet of paper, a bro- chure, a catalogue, a newspaper, a form or packaging of some suitable material . The product can advantageously be of such material that it is possible to write information with an ordinary pen point . The position-coding pattern can be any type that codes coordinates for positions with a resolution that makes it possible to record electronically text handwritten with a normal pen point . The pattern is preferably of the type described in Applicant's international Patent Applications WO 01/26032 and WO 01/26033.

A great advantage of the use of a position-coding pattern of the type described above in comparison to some other type of code is that the position-coding pattern makes it possible also to record graphical information which is drawn by hand.

For example, the mark which is made in a payment box can be recorded and stored in the system. This makes possible later comparison with the physical mark which the user has made in the advertisement. The user can additionally choose to make the mark as a personal mark instead of just a cross or a tick.

In addition, the position-coding pattern allows the user to attach any graphical information that is not coded or specified in the system itself to another party in the system, which naturally increases the flexibility of the system considerably. The user can thus attach a more detailed specification of the operation or a message with requirements or information concerning the operation to the other party. The position-coding pattern has thus the dual function of coding information and of making possible recording of graphical information.

In the simplest case, the reading off of the position-coding pattern can be carried out by reading off such part of the position-coding pattern that codes coordinates for a single position. In other cases, it can be necessary to read off coordinates for several positions. rt 0 rt TJ 0 Ω H- TJ ft CQ Hi o TJ ft μ- 3 μ- 0 O fu μ- TJ μ- rt ii rt fu Ω _— rr 3 > tr TJ 0 Φ TJ 0 3 ϋ H- rt 0 rt ϋ Φ ft CO 3 TJ rr CQ ft fu 3 t Φ μ- cr f ti tr μ- rt

Φ φ ϋ Φ 3 Hi H- Hi 0 ii 3T 0 < φ μ- Φ ii CD φ rt C^Q o f 0 H Φ fu rt ii tr co 4 3 0 C^Q Hi ii Φ ft H- 3 3 O ϋ 3 0 3 rt rt 3 ft 3 Φ H Ω rt tr rt

H- fu Φ 0 fu Φ H Φ H- Φ μ- H 3 Ω rt CQ ti fu Ω Ω rt Φ H f fu 1 μ- Φ tr

3 rt 3 rt ω Ω 3 C^Q 1-3 Ω ft ft Ω Φ μ- ft rt rt H3 μ- μ- 3 H CQ cr Ω Hi I-3 Φ μ- rt fu φ

CΩ H- fu 1 H- ^■ ; rr u tT 3 Φ 3 rt • Hi rt φ μ- μ- Ύ Cu rt 3 Ω 3 3 H 0 0 tr ft TJ tr rr 0 tr CQ 0 H- rt IQ φ 1— > - 3 3 μ- 3^* ii 0 0 Φ rt * ; rt Φ φ ft ii (0 rt φ TJ O ii 3 (-^■ TJ 3 ii 0 H- H- rt 3 rt μ- μ- ι-3 φ Φ 3 3 Φ r μ- f rt μ- 0 Φ fu

3 • Φ Φ Φ 3 0 <! CQ μ- Λ ft 3^J ft Hi CD TJ ft ^ ^ 0 μ- cr 3 i tr 3 TJ 3 3

Ω Ω Hi fu 3 H- rt Hi tr Hi 3 Φ μ- TJ 0 ft Φ μ- 3 TJ Ω X CQ Φ f rt 0 φ Φ rr H rt H- H- ft 3 3 φ 0 f μ- Φ 3 CQ r Φ ii 0 rt H rt 3 ϋ -. f 3 . H ii TJ

H- Hi 0 t-h Φ H- H- fu CQ TJ ii ii Ω rt ^> ii Φ 0 CQ tr Φ Ω Φ CO TJ ft ft CO 0 rt o H- r-¹ 3 rt <! ft f Ω μ- Ω Q rt CD O f 0 Hi Ω o fu μ- 1 Ω o μ- μ-

3 rt tr Ω ft CQ 3T f fu 0 fu s: rt O Hi fu 3 o tr rt 3 s; 3 3 φ f 3 rt 3 tr 0 3 3 3

3^{^} φ H- 3 Hi fu μ- ft μ- 3 φ 3 Φ 3 tr tr CO TJ H TJ φ rt CQ Φ 3 rt Φ

Ω Φ H- o rt 3 H 0 Φ Ω fu 1 0 Φ ≤ μ- ϋ h f φ 1— ' Hi 3 fu 3 rt Hi - fu H- to CQ Φ 3 f cr 3 CD o rt tr Ω O μ- φ Ω 0 w O ft μ- tr 0 f

3 O ra Hi 3 Hi Φ tr 3 H- Φ rt rt Φ CQ TJ TJ O 0 " Hi ra ft μ- rt 3 Hi H o 3 CQ

TJ Φ O Φ CQ ! H O TJ ¹ μ- φ φ 3 > Φ rt tr Hi ft 3

Ω Φ ft u rt Ω φ rt H- ϋ C fu O f 0 Ω H Φ ω 3 rt fu CD φ μ- Φ Ω Φ fu Ω rt rt

O H 3 TJ tT fu ϋ 3 rt ii rt 3 Hi μ- fu Φ rt CD t 3 <! H ju f <! rt P» 3^* tr

3 f tr J Φ φ H. rt 3 lΩ O μ- TJ ω Hi rt ft Φ Φ Φ tr ϋ r φ 3 μ- μ- ii φ φ

TJ rr ^ ft K i-J 0 Ω 3 0 tr 0 φ rt μ- μ- 3 C^Q f Φ 0 TJ TJ Ω 0 H

H H- H- CD TJ ^ rt fu Ω CQ f ii H " Ω 0 rt TJ 3 f ft tr cr 0 Φ 3 μ- ft ϋ

H- 0 fu 0 0 0 H- f H- 3 3T CQ Φ CQ μ- Φ 3 0 fu r φ ft ft μ- μ- > Φ CD Φ Φ φ

CQ 3 3 3 CO 3 0 fu o CQ 3 fu μ- cr ii 1 μ- 3 3 CQ μ- Ω rt ft <! f

Φ * TJ H- Q TJ 3 H- 3 3 . tr fu μ- 3 rt Φ 0 φ O tr 3 Φ ft H- 0 rr f tr μ- ft

QJ rt rt rt f 3 CQ Φ φ 3 ft Hi 0 3 3 0 Φ cQ 3 3 Ω TJ μ- 3 fu 0 Ω i-¹- cπ f Hi n 0 3" H- 0 ii rt C^Q Φ ι-3 φ 3 3 φ 0 rt rr ft 3 rt Ω fu rt 0 rt 3 φ 3

3 0 rt 3 0 3 rt 0 rt 0 tr 3 Hi 3 3 i cr Φ Φ 1 ft 0 - rt μ- 3 r rt . cQ

H ^< cr w 3 rt X ϋ H- rt φ SD rt 3 φ ϋ rt < CQ Hi μ- o 1 Φ rt

H- Φ 1 3 3 rt 3^* CO Ω C ¹ μ- fu tr μ- TJ ft Hi rt < TJ su Ω tr rt H 0

3 Φ rt CQ Ω 0 rt f a . Φ μ- rt rt Φ rt rt fu f Φ Ω φ Φ 3T φ H O fu Φ tr tr Hi

CΩ X t 3 H- 0 Hi tr <* rt H ft O 3 ϋ ^■<: μ- cr 3 φ Ω < rt Φ - μ- ft 3 Φ μ- Hi rr fu fu fu <! ft PJ Φ H- Φ K H - 0 ^ Ω μ- μ- t 3 "< μ- •<; H CO - fi 3 rt ft Φ H- rt rt 0 £ 3 Φ μ- 0 3 Φ fu f Hi Ω φ CQ o Ω 3 Φ H

3 TJ Φ CO 3 tr rt 3 J rt ft 3 rt Hi μ- ti 3 μ- Φ rt tr μ- H CQ ft fu Φ tr fu

Ω H H- CQ Φ 3 3^J ^ μ- cQ tr rt ft i ft Ω TJ Φ Φ TJ Φ Φ ft fu fu rt Φ ra fu TJ Φ Φ TJ rt μ- f rt fu o φ * rt 0 TJ 3 fu TJ < μ- ft CQ 3

H- - < Φ TJ 0 Φ 4 rt < 3 3 rt tf CD 3 μ- $ μ- tr CO μ- Φ ft f μ- 3 μ- u

0 H- Φ ϋ fu TJ ft TJ Φ - 3 Φ cr rt 3 tr 3 fu H- 0 Ω •> 0> rt Ω CQ 3 rt ϋ

3 H- 3 H- 3 rt Φ CO Φ Hi fu μ- rt μ- rt φ μ- CQ 0 Hi rt rt Hi fu tr rt Φ CQ tr m <l H- rt •i ϋ Φ rt Q - r Q tr tr Hi 0 H- O Φ 0 Φ n- 0 fu CΩ Φ fu rt C^Q ϋ Φ Φ fu Φ Ω H- 0 CQ ii tr 0 CQ ~ 3 Φ H rt Hi o Ω

0 PJ cr CO ii rt 0 0 fu 3 TJ H fu 3 fu Ω 3 μ- 3 f 3 μ- Ω 3 tr Hi Hi fu J

<! H- 3 μ- 3 r fu f ft - ft TJ ii fu rt < f CQ I <! φ tr fu HI ft 3 fu TJ Φ φ 0 o 3 1 I-* ?r φ Φ 3 1 Φ ii rt Φ rt Ω μ- rt 0 rt tr < fu ft 3 H- 3 CO C^Q • Φ Hi < 0 3 tr ii μ- μ- O D μ- fu 0 3 Ω fu ii ι-3 fu tr fu cr i— ' 1 rt 3 • φ TJ CD Φ μ- ϋ μ- Φ CQ Φ 0 Hi 0 ft CQ . CQ tr μ- CQ f 3 Φ

0 H- 0 Hi Φ Ω ii Ω Λ 0 ft 3 μ- 3 3 μ- Ω Φ co CQ rt

=^> φ 3 0 rt H- Ω 0 μ- f Φ C^Q 3 ft 3 rt 3 3 3 f φ fu cr fu 3

3 fu ϋ 3^J rt H- 3 rt tr 0 Φ 0 ft 3T 1 μ- μ- Q 3 3 TJ CD Φ fu CQ f fu rt rt 3 Φ Hi 1 3 μ- 3 f Φ D Λ φ 0 3 Φ Φ ft

3^* ft rt μ- X Φ CQ rt rt 3 Ω cr CO μ- 3 Φ Φ tr 3 Ω J Φ 1 Φ μ- rt Φ 1 1

<! cr μ- μ- rt rt rt fi 0 ϋ 0 TJ ≤ TJ tr TJ 0 Hi μ- CQ rt fu cr rt μ- Ω TJ H μ- fu Ω TJ μ- 0 3 3 μ- - tr fu ti Φ 3 tr fu Φ tr 3 μ- 3 ii tr Φ μ- 3 O Φ Φ 3 Ω fu fu

Ω Hi 0 Φ μ- rt cQ I— ^■ Φ Φ rt μ- φ CD fu Φ CD rt Hi ft H iQ CD Ω ϋ ><; φ φ 0 0 3 CD μ- μ- fu ^ 3 ii rt Ω Ω rt rt TJ TJ fu ^ 0 μ- CQ 3 rt O ft 3

CD CD rt ii fu CD _^ 0 3 ii φ φ Φ fu fu tr ft ii tr tr Φ Ω ϋ 3 0 μ- H 3 φ tr 3 ^ 3 ft ii 3 ii ii H φ 3 ^■ μ- fu H3 Ω tr H 3 CQ H 3 H 3 H 3 3 3

Hi Ω Φ f CD fu rr μ- Φ rt μ- 3 ii < s; Ω Ω 3 tr μ- μ- 3 rt fu 3 - μ- Ω Hi rr 3 rt fi ft⁾ fi rr μ- rt 3 r 3 fu rt μ- Φ μ- TJ tr rt fu ft Φ fu φ 0 rt TJ CD 3 rt 3

0 3 μ- 3 Φ ft i-3 φ CQ Φ ϋ μ- Φ 3 3 fi μ- μ- 1 < rt μ- fu ii CQ μ- rt tr ii

3 Hi 0 Hi 3 tr < ^ Ω 3 ft Hi 0 Ω 0 tr 3 φ tr rt 0 rt Φ ft . 0 tr Φ Φ μ- 3 0 rt Φ Hi rt fu fu rt 0 ft tr 3 μ- Φ Φ rt ft μ- tr 3 rt CD μ- rt 3 Φ i Ω

< Hi Φ ϋ rt tr 0 tr 3 μ- 3 rt 0 tr ii 3 3 rt s CD φ Φ TJ CQ tr μ- fu 0 (-^■ Ω 3 0 3 TJ ii Φ rt 3 tr 3 0 3 Ω μ- cr Hi ft tr 3 fu ϋ 0 μ- φ Ω 0 fu TJ ii t ft fu fu CD 0 3 Hi cr Φ rt 3 fu rt D ^■ ; 0 0 φ CO % TJ <! 3 3 rt fu TJ 3 μ- μ- CO 3 rt Ω CD 3 Hi 0 Φ CQ rt H ft ft • μ- fu fu fu C^Q fu D 3 Φ ft φ

0 Φ μ- fu rr μ- 0 3 0 ii 0 CO tr μ- fu TJ 3 3 Φ 3 ^• ; ii μ- rt Φ μ- ii 3

3 X 0 0 H tr rt Hi ii 3 fu TJ μ- 0 3 ti 0 fu ! Ω CQ rt tr CQ Ω fu 0 rt

CD fu ii 0 3 ii Φ μ- tr fu ft Φ 3 fu 3 ft 0 <! rt μ- fu ^ fu Φ rt CD 3 0 rt cr

3 Hi X 0 fu Φ rt r < ϋ TJ 3 <! μ- ^■ μ- Ω 3 TJ fu σ 0 μ- fu 3 μ- rt rt Q TJ cr CD CD 3 ii tr μ- fu fu s; μ- 3 0 Φ φ rt ft CQ rt TJ 0 fu 0 o 0 Ω μ- 0 fu 1 CQ Φ 0 3 rt * 0 tr ft CQ 3 Hi 3 i tr φ Φ rt 3 3 ii 3 μ-

0 Φ X 0 3 3 3 Ω μ- 0 3 rt μ- TJ μ- φ rt 3 Φ P» - <J tr fu ii μ- 3 tr ft • φ 3 TJ rt φ 0 CQ Hi o fu O cr Φ Ω ft rt rt O ii fu 3 rt μ- Φ rt φ CD μ- fu

CQ CO ϋ ft 3 TJ 0 CQ 3 *< ii tr tr ^ rt 3 0 φ Ω 3 φ co TJ <!

CD CD ^> rt rt μ- fu TJ φ Hi Φ fu :> φ fu Ω tr ft rt 3 . φ ii ii 0 fu φ

0 TJ 0 φ tr Φ 3 rt H H 0 Hi ϋ rt μ- μ- rt ii Φ Φ Φ CQ Φ Φ 3 fu fu

H Φ 3 - f φ Ω CQ 3 0 fu fu 3 μ- φ μ- CQ rt ft φ ϋ TJ Φ • rt fu 3 fu

Ω 3 tr H ft rt C^Q φ fu 0 tr φ μ- fu fu ^ ft tr ft Hi rt CD φ Ω

CQ μ- rt fu ft o 3 J Φ 3 μ- 3 ft 3 μ- < CD rt Ω TJ CD cr 3 μ- 0 tr μ- μ- 3 Ω n

Φ Hi tr TJ μ- fu Ω 0 0 Hi ft μ- 3 rt μ- Φ 0 Φ Ω ^ CD 3 ii φ 3 CQ rt Φ ii ^ φ CD Λ φ vQ rt fu rt 3 3 0 3 μ- rt tr Ω rt ■3 ii 0 μ- CQ CD 3 CO

<! 0 3 ti 3 rt CQ CO 1 ϋ CQ 3 φ Φ φ 0 fu TJ - 3 rt 3 3 fu ft rt H- Hl CO μ- Ω TJ μ- fu Φ Φ μ- H rt 3 3 ii rt • Φ fu 0 ft 0 ϋ 3 H

Ω tr ϋ Ω Ω rt H Ω rt 3 Φ rt tr 0 μ- ft TJ fu cr ft μ- fu i fu ^ Hi ft Ω 3 CQ 0 rt φ 0 0 0 μ- Ω 3 0 tr Ω tr Φ Hi rt Φ 0 Ω Φ co 0 3 φ HI μ- 3 Ω 3 O

CD μ- ft 3 0 fu 3 fu i-Q 3 Φ H Hi o ft D ii K Φ cr CQ O rt 3 rt 0

Ω 3 CD 3 3 μ- Hi rt 3 H φ μ- 0 fu Φ Φ 0 μ- Φ μ- Hi rt rt rt φ Ω μ- D μ- Φ ϋ TJ rt D rt rt CD rt Ω rt μ- φ 0 rt Hi 0 3 0 tr tr tr rt O fu cr ii fu CO φ Φ fu tr μ- 0 μ- CD rt 0 tr rt ft Hi tr 3 rt 3 fu Φ φ fu 0 . rt H 3 Φ <i 3 rt 3 ii ii Φ 0 fu ii φ φ rt rt Hi tr ft φ fu TJ μ- rt CD Φ TJ ii 3 fu Ω ft TJ 0 rt tr rt fu rt ft Ω TJ ] 0 Φ 3 H rt fu 0 o J Φ 1 3 tr CQ Φ TJ tr TJ Φ 0 Ω 0 0 K φ f CQ tr Hi rt CD ^ μ- ^■<! 3 rt 3 0 o φ Ω Ω Φ Φ rt 3 Φ Φ Φ Ω Ω Φ fi

H 0 Φ CQ 0 Φ o 3 - ^>< TJ CD CO Φ 0 μ- ft Φ t ti TJ rt Φ CQ 3 ft CD

Φ 0 CD CD 3 ft CD 3 Φ TJ rt φ μ- rt μ- ft 3 Φ TJ fu fu 3 CQ 0 tr to μ- 3 μ- 0 ft Φ μ- TJ fu 3 3 Hi Φ 0 ii rt <! μ- Hi rt Ω 3 rt 3 0 CO φ CQ < Φ rt 3 μ- CD 3 TJ ft rt μ- o rt O fu μ- Hi φ 3 O O rt 0 ft μ- μ- 3 μ- φ 3

3 Hi TJ ft o rt Hi H rt fu rt 0 0 Q ii ϋ Hi 0 KQ 1 rt ft rt rt Ω CD ft 0 μ- Φ fu Ω tr ft μ- 3 ii rt 3 rt 0 TJ 3 3 CD μ- o 0 rt •> fu μ- ϋ Φ φ 3 fu μ- r rt 0 Φ fu ft 0 1 3 tr J fu tr 3 3 fu Φ TJ 0 Ω tr fi Ω

Ω φ ft 3 tr 3 X rt 3 Ω Φ fu rt Φ μ- CD TJ Ω φ 3 3 rt Φ rt ft ϋ f CD ft 3 3 ft CO Φ Φ Ω- fu CD O O Ω rt μ- Ω μ- Φ fu μ- Ω 1 3 tr tr Φ rt Φ CD fu rt μ- rt Φ 3 μ- 3 ft fu CQ rt 0 CD fu 3 ϋ 3 ft μ- Φ φ 0 Φ ft

Φ ii ii fu 1 H Hi 0 ϋ TJ CQ J μ- 3 t Φ 3 fu CQ φ Hi 3 3 μ- ft 1 0 ii 3 0 TJ 3 1 3 fu ii μ- 0 3 μ- rt Φ rt ii CD Ω H Φ CO ^" Φ CQ 1 3 ft Hi 1 Ω rt 1

ω ) M K) H H in o in o in o . in

3 Ω μ- ϋ SD fu fi μ- Ω 3 CO tr O 0 rt 3 Q rt CQ μ- rt 3 Ω rt CD 3 fu cr t 0

CD 0 ft Φ 3 Φ 3 fu fu ^ φ ^■- Hi O fu Φ 3 rt tr O CD tr φ fu H- μ- φ fi φ

Ω TJ ϋ rt CD CQ CO ^ 3

Φ ft φ CQ φ CQ 0 φ 3 Φ 3 fi 0 Ω Φ Φ

CO μ- 3 Φ ii 0 fu fi μ- rt 3 rt TJ rt ft rt fi fu rt fi 3 0⁾ ft Ω O rt

3 rt μ- 0 TJ rt 0 *<: o Φ fu Φ Φ tr 3 μ- Φ φ CQ O μ- ^ CO Ω .0 TJ 3T rt Q μ- < ft Φ Φ Hi 3 3 ft 3 fi Φ f-3 0 3 cr ft > Hi TJ • J 0 > tr 3 0 Hl Φ Φ tr Hi μ- 3 ϋ CO Ω Hi 0 Φ -- CO tr rt CQ X CD Hi fu fu CD 3 0 μ- fi 0 ft ' tr Ω

Φ TJ ^ 3 Ω fu Ω 3 3 0 TJ Φ μ- φ Ω ^ rt φ 3 TJ TJ Φ rt Φ μ- φ μ- TJ fu μ- CQ rt rt rt 0 fu rt μ- H fu Hi 3 Φ 3 rt fi 3 rt Ω Ω 3 φ ft rt fu ft 3 Hi fi ft rt 3 • μ- 0 ϋ rt tr <! fi 1 fi 3 O O φ tr rt 0 Φ 3 fi Ω fu tr φ μ- O

Φ rt CQ fu O ft TJ 0 tr Φ fu 0 CD CD Φ fi fu rt Φ 3 3 μ- rt fu rt fu μ- ft 3 μ- ft

< Φ "> H 3 fu μ- o TJ μ- 3 TJ 0 rt 3 O ft tr rt 3 rt μ- fu 3 μ- 3 μ- <J 3 Hi 3 3 μ- ϋ TJ tr 3 CD Φ Φ TJ φ 3 ? fu TJ μ- Φ TJ tr rt ^> co Ω 0 φ $ 0 CQ Ω

Ω 3 cr 0 Φ Ω 3 CQ μ- fi fu Φ fu S Ω 0 Φ 3 φ fu TJ fu 3 tr 3 ti- μ- fi rt φ ^■• CD 0 Φ rt fu Ω fi cr tr μ- Ξ ft Ω cQ CD fi rt fu rr rt fu Φ w u tr rt 3 ^ «.

Ω μ- 3 3 rr rt μ- rt tr D μ- Hi tr ^■<; μ- ^ CD 3 tr tr ^ 3 y φ tr fu tr rt 0 3 rt φ Ω tr 0 O μ- O Φ o μ- Φ ft Hi 0 CD 0 fu ft Φ Φ 3 O fi fu μ- fi rt μ- 0

0 ft φ μ- rt Φ 0 3 O 3 3 tr Ω 3 Φ 3 ^ Hi rt 3 fi Φ t TJ Φ μ- rt μ- Ω fi

Φ fu O tr fi ft fu 1 3 φ rt CO Φ HI Φ 1 TJ rt TJ φ 3 μ- ^ ft 3 tr 0 tr rt CD 3 3 0 3 Ω CO g. ft 0 rr μ- tr Ω 3 fu CD fu ^{^} Φ Hi rt μ- O fu Hi Φ 3 Ω tr •• CD 1 ft μ- μ- CO 0 0 tr 3 φ i 0 fu TJ ^> Φ fi 0 Φ μ- Hi 3 rt 0 3 fu

Φ Ω 3 3 Φ ft μ- TJ Φ <1 Φ Hi μ- fi Φ 3 CO ϋ 0 3 Hi μ- fi 0 Hi φ 3 fu 0 0 μ- CQ Ω μ- 3 fu CO fu 0 0 cr μ- 0 TJ fu Ω Φ μ- 0 Φ TJ ≤ rt Φ rt 0 3 TJ μ- rt

Φ 3 Hi ft co fu 0 3 fi fi μ- fi fi φ N 3 0 μ- 3 3 3 Φ fu Φ fi tr 3 fu Φ φ tr KQ

Hi μ- CQ 3 CQ rt rt 3 μ- rt 3 ft φ Q ω TJ Hl rr C^Q 1 fu fi ^< fi Φ φ CD rt fi 0 3

Hi μ- Ω 3 Ω 0 tr ft tr ^ 0 O Φ fu CO ft μ- φ μ- rt CQ fu Φ 3 tr μ- fi⁾ ft ft fu

Φ 3 0 CQ tr 0 fu TJ Φ rt 3 3 rt tr fu • fu rt fi Ω μ- fi TJ TJ rt 3 CO rt TJ μ- 0 rt

Ω CO O fu ft 3 fu fu 3 CD μ- Φ tr Ω μ- D CO 3 φ fu μ- O rt fi TJ 3 μ- Ω 0 μ- rt rt fi TJ fi CD ft CO rt => ^' μ- rt 0 0 0 Ω O 0 μ- Ω Ω ^> ; 0 μ- μ- 0 0 O fu Hi Hi o ϋ ft fu fu 1 TJ rt fu rt tr TJ fi 3 Ω < 0 3 3 3 rt rt μ- 3 3 3 3 3 ft rt Hi 3 3 rt μ- ^

3 rt Ω 0 tr Φ Φ ^ tr Φ fu fu Φ 3 1 Hi O μ- Hi > CQ CQ Φ 3 tr μ- TJ tr Ω 3 rt rt ϋ Φ Ω 3 fi μ- μ- 3 3 Ω Ω 0 0 μ- 3 • Ω fu Φ Hi cr fu rt fu rt fu Φ Φ H-" rt 3 ft s; rt rt 3 μ- rt 0 fu ϋ σ 3 Ω rt H fu 0 ti^¬ rt μ- Φ ! tr rt μ- rt fi fi CO ft Φ tr 3 μ- Φ CQ CO ft 3 3 φ 3 TJ ft φ 2 ω

O Φ 3 μ- φ O μ- O μ- Φ Φ 3 rt rt 3 μ- fu μ- μ- CD tr φ r Ω H¹ fu φ fu 3 CQ N fi ft Hi 3 Ω Ω Φ CD CO tr 0 0 3 3 Ω rt 3 Q 3 ^ fu fu fi 3 0 fu ft 3 0

3 Hi Φ < Φ fi tr ft Φ i Hi 3 CQ fu μ- fu Hi CQ 3 fu rt fi 3 CQ rt TJ

Hi $, fi ft μ- < rt fu μ- Ω 0 Φ tr fi 0 ft fu O rt TJ ft rt fi ft Φ Φ

0 li tr 0 Ω μ- 3 cr rt rt O Hi CD TJ Φ TJ fi 3 φ 3 fi Φ fi 1 μ- μ- Φ f-3 TJ μ- fi

TJ 0 μ- 3 tr φ Ω φ φ . tr 0 3 fu 0 fu fi fu ^< 3 3 Φ tr 0 3 CD 0 tr fu o fu

Φ 3 Ω X CO φ 0 ft φ 3 μ- 3 3 fi rt μ- Hi μ- fu Hi Φ 3 CD TJ TJ Φ ϋ rt fi tr rt μ- TJ CD Φ 3 Φ Φ rr £ rt 0 CQ fi 3 ct Φ ti^¬ 0 Φ fu rt μ- fu fu tr rt μ- Hi 3 Φ fu TJ rt Ω Hi μ- tr Φ 3 0 CQ μ- r fi ft rt ro 3 fi TJ rt 0 0 rt rt Φ 3^* 3 0 <; fi tr φ 0 rt 0 TJ 0 Ω μ- fi rt TJ 3 rt 0 tr fi 0 fu ft fu 0 Φ 3 μ- TJ tr Φ ft fi φ fu 0 fi fi μ- i fi 3 Ω 3 fi fi 3 Φ Φ ft ft CO rt CQ cr

0 Φ φ TJ μ- 3 rt < D Φ 3 3 fu tr fu Φ rt 3 ft φ t μ- μ- Hi Φ

3 H fi CQ Ω H- rt μ- Φ o CQ fu Ω 3 fu <! tr Ω μ- 0 <! Φ rt rt 0 rt μ- Hi

CO TJ 0 rt fu 3 μ- 0 3 rt rt Φ 0 fi rt Z TJ μ- φ rt CD TJ Φ μ- tr 0 3 H- Φ 3 0 μ- 0 0 ft Φ rt μ- 0 3 tr tr rt μ- fi tr μ- fu 0 μ- Φ Ω fu φ 0 CO fi

CD 3 CQ 3 TJ Φ rt 3 X 3 Φ 0 0 μ- Φ μ- φ rt ^ 3 fu 0 r fi Q' Φ tr rt Hi 3 ft φ μ- Ω CO ft μ- - Hi fu 3 3 3 tr 3 CO Ω 3 tr fu 0 fi tr μ- CO ft Φ rt ≤ rt rt fu μ- fi 3 μ- rt μ- rt TJ 0 Φ Ω Φ rt ft μ- φ φ Φ Φ o X

0 tr μ- ~ 0 0 rt rt Φ Φ rt 3 tr Ω rt rt φ φ 3 3 X 0 rt μ- μ- co t-¹ rt fu

0 0 Hi 3 μ- tr fu CQ Hi φ fu tr Φ fi fi rt rt 3 0 TJ 0 3 «. rt fu TJ ft tr tr 3

3 3 μ- ft ft 0 3 Φ 3 Φ CD 3 Φ 3 Φ 0 1 t fu Ω TJ

Φ CQ CO 1 rt ϋ CD CO 0 rt fi 3 fu rt fu H¹ 0 1 rt 3 1 cr O 1 3 Φ

> t NJ μ¹ in o in O in O in

CQ TJ t μ- μ- rt Hi H rt CD rt μ- rt cr φ H Ω Ω 0 rt rt 0 Ω TJ < TJ ft) ^' D 0 CD Ω

TJ fu • ! 3 3 tr ϋ rt μ- rr tr ft tr 0 X Φ 0 0 3 fi μ- Φ Hi 0 ft⁾ μ- ft⁾ TJ ^ Hi rt ft⁾ φ rt CD Φ 0 0 0 Φ Φ Φ ft rt Ω ii ft CD ft 0 fi ft rt Ω rt TJ CΩ 0 fi

Ω rt 3 rt rt 3 CQ 3 i 3 μ- Φ φ fi μ- rt Φ 3 3 rt μ- ti^¬ Φ ti^¬ ft⁾ ti^¬ rt fi fi μ- Φ Φ fi tr CQ 3 O Φ Ω rt TJ 3 fi μ- Φ 3 fi 1 tr 3 ro ro fi ro rr Φ μ- l- fi fu > 3 φ rt rt Hi . 0 μ- Φ μ] φ 3 <! CQ CQ μ] 3 Ω μ- Φ Q fi fi fi ι-3 Φ m 3 Φ ft φ μ- 3 3 3 Ω Φ tr Hi fu 0 Hi fi tr 3 fu Φ TJ tr fu rt 0 CQ 3 φ 3 tr 3 tr • ft

Ω CD rt 3 TJ Φ H- μr fi μ- CQ Φ rt ft 0 TJ Φ ft 0 ft ft TJ Ω Φ rt ro 0 μ-

Ω μ- μ- φ CO Ω tr ft Φ 0 3 fu Φ μ- rt Φ fu 0 TJ 3 0 μ- 0 0 M 0 rt Ω Φ Φ μ- μ- ft 3 Ω fu 3 TJ ft rr ft CQ 3 tr <! r H fi f⁾ Φ 3

Hi TJ .w tr t

3 ft 3 £, 3 0 CD co 3 o CO 3 0 CD rt Φ ei- μ- CQ 3 μ- rt fu ft Φ ft⁾ ϋ Q* ϋ rr rt

Φ 0 0 Φ 0 μ- rr fu cr Z 0 μ- CΩ . Φ < O 3 CD Ω Φ Ω μ- Ω 3 0 < ft⁾ tr

0 CD rt fi cr ii Φ fi rt 3 rt < tr fi μ- rr μ- fi μ- TJ TJ φ fi tr 3 Φ ft 3 ft⁾ rt Φ 3 ϋ tr rt ^■>< i ft ft tr CO 0 Φ 0 ft rt . rt > 3 Ω rt fu 3 . 3 Q TJ 1 3 μ- Ω

3 Φ fu Φ μ- fu rt CD rt μ- μ- H" Φ rr H- rt 0 μ- rt tr rt rt 0 CΩ μ- ft⁾ fu 3 rt 0 ft 3 rt fi tr 3 3 fi Hi 0 ti^¬ fu Φ ti^¬ rt tϋ Ξ t 3 0 μ- ro tr ft⁾ 3 *<; 3 rt Ω tr fu 3 Ω fu Φ CQ fu φ tr 3 ro 3 μ- ^ ro •<; rr ft⁾ 3 0 Φ CQ CΩ CQ μ- TJ 0 φ rt rt n O fi φ rt Λ μ- 1 ii £ rt TJ fi 3 μ- CQ φ 3 ft ro cr rr

0 fu 0 Hi rr 0 Φ tr rt 0 φ ft CQ Φ 3 CD Ω 3 CΩ o rt 3 Φ fi Ω ro fu CO ^ Φ TJ

3 fi fi 3 3 tr fi CQ φ μ- fi Φ CQ μ- 0 fu ft Φ Ω tr fu Φ tr 0 Ω ft cr 3 φ rt ft 3 CQ Φ 0 ft CO < rt fi μ- ft rt φ I-¹ μ- Φ 3 Ω Ω fi ft⁾ φ 0 o Ω fi μ- ^ μ- Ω Φ 3 μ- ft 3 μ- φ μ- tr fi φ CD μ- μ- rt rt tr rt Φ o o 3 <! o fu Ω

3 3 rt fi o fu 3 φ 3 3 Ω Φ φ CO ~ 3 <! Φ μ- ft 3 TJ 0 3 3 μ- Φ 3 3 O rt fu μ- TJ i < 3 fu rt φ TJ CQ Φ fi TJ 0 Φ rt rt rt ii ti- 0 li^¬ Ω . rt 3 ft 3

Ω tr rt 0 0 Φ μ- 0 μ- Φ rt • ft fi Ω tr 3 H 3 CΩ tr μ- fi ft⁾ fi ft⁾ φ tr 3 1

0 ft> Φ 3 fi 3 ϋ Ω Φ Φ 0 Φ Φ 0 0 TJ μ- Φ 1 Ω u. φ

^ 0 Φ μ- Φ ;v μ- 3 3 CΩ

3 rt O fu CQ ft Φ ft CQ f-3 fi <! CQ 3 $, fu 3 Hi Ω ϋ 3 3 ω 3 φ rt o μ- ft) TJ

3 0 rt rt Φ tr μ- Φ C^Q Φ rt Φ φ 0 μ- CD li TJ CD μ- tr Ω ? φ

Φ 3 3 tr μ- TJ fi 0 3 fu Φ cr o 3 μ- rt rt CQ fi ft J rt Φ 0 0 3 TJ 3 ft⁾ ft⁾ μ- Ω oo

Ω Φ tr Φ 0 0 cr 0 3 ^■• φ rt ft Φ Φ tr fu μ- rt Ω Hi 3 ft⁾ ft⁾ CQ CQ rt 3 μ- rt Φ μ- rt 3 O Hi rt ti^¬ ft ft • Φ fi fi φ rt σ 3 μ- 0 Φ ft CQ ft⁾ TJ μ- Q Hi μ- ft Ω tr ft CO 0 fu φ fu rt fi - 3 0 CQ 0 Hi TJ rt CO CΩ φ Ω fi ro 0 μ-

0 CD tr Φ Φ rt μ- fi H- r Ω < 3 ι-3 tr ft⁾ ft ^ 3 rt tr 3 CQ φ φ Ω 3 TJ Ω

3 <S tr r 3 Φ 0 μ- tr Φ cr fu Hi φ Z TJ fu μ- Φ rt cr Ω rt 0 rt rt ft μ- fu μ- CD i Ω Φ Φ 0 <J tr ft CD 0 0 CQ O cr φ Z CD μ-

S. 0 tr Φ Ω rt Φ rt Φ fi φ X μ- Φ H¹ fi μ- fu Φ rt fi CD 3 TJ ro ^ μ- 0 μ- CΩ 3 μ- Φ < φ Φ X Φ rt μ- 3 Φ Ω rt Ω rt Φ 3 0 rt rt <! Hi rt μ- rt 3 μ- • Ω rt rt 3 TJ CO 3 Φ 3 CO tr CD ft φ 0 Φ Hi cr 0 CD tr rt PJ φ tr tr O tr rt TJ Ω 0 tr 0 0 TJ fu ϋ o rt fu CQ Φ Ω ft fi Φ CD Hi μ- φ 0 tr CD rt H-¹ fi μ- o φ fi Φ 3 μ- O ^> 3 rt ϋ 3 Ω Ω 0 Φ 3 fi CD rt φ CQ tr ft⁾ Φ 3

Ω CD fi cr CQ Ω 3 fu fi 3 ft TJ 0 fu 0 CO φ rt rt μ- Φ ft⁾ φ ft⁾ fu μ- μ- μ- Φ Ω Φ tr μ- ft Hi 3 Ω $ fi ft 3 fi 3 rr 0 μ- rt TJ 3 3 rt rt fi N rt o CQ fu rt μ- 0 Ω rt μ- φ μ- ft rt Ω 0 Φ 3 Φ pr 0 CQ TJ μ- φ tr μ- ϋ φ μ- TJ ii fu μ- 3 fi 3 rt H- ft Hi 3 CO μ- tr Φ Hi 1 φ Q 0 0 3 rt Φ 0

^ 0 rt O fi cr 3 ^ 3 μ- 0 rt Φ CQ Φ 3 φ $. Ω ft μ- fi CD < ^ 3 μ- ei- 3 0 3 ^ μ- μ- O 3 tr fi 3 fu μ- rt tr 0 TJ rt μ- ro o Ω

3 tr 1 ft μ- Φ 0 μ- μ- 3 rt 3 . fi μ- ft rr TJ CD tr 0 ft 0 0 μ- μ- rt 3 fi ft) TJ

CQ Φ Ω μ- Q 3 fi ft 3 CQ CQ φ 3 Φ 0 - μ- μ- CΩ O 3 μ- rt ? fi fi

0 ft CQ rt 3 φ O rt fϊ Ω μ- ft f-r CQ CQ CQ Φ 3 μ- 3 0 . μ- 1 fi Φ

0 TJ ft Φ rt 1 0 fu 3 rt fu 0 fu < CO tr μ- tr . Q < rt 1 rt 3 0 cr ^ <!

3 Φ μ- 3 0 0 rt rt fi 3 3 φ Φ 0 Φ rt rt 0 TJ μ- μ- Ω tr 1 3 ft⁾ μ- μ- ti^¬ ϋ 3 rt 3 rt μ- μ- 3 Ω s: 3 3 3 rr μ- s; H 0 TJ CQ 0 O φ Ω CQ 3 0

CD CQ μ- rt rt fu 0 Hi Ω Φ tr tr 1 φ μ- 0 Φ 3 CO fu μ- 3 ft 0 ft⁾ Φ CQ 3 er 0 tr f 3 μ- 1 μ- Φ cr CΩ 3 < μ- rt 0 1 μ- ft ft fi ft CD tr 3 ^■<; φ Φ φ Ω ^ Φ 1 1 3 3 φ μ- Φ 0

Φ 1 ft tr ϋ CQ 1 3 3 ^ CQ rt

⁾ J to CO μ> in o in o in O in

CQ ϋ CD rt Ω 3 cr tiHi 0 μ- rt 3 TJ ft Ω 0 rt tr Hi Ω CΩ rt rt ≤ CD rt μ- O

Φ ft⁾ μ- ft⁾ φ ro 0 TJ 3 tr ro ft⁾ φ ft⁾ H- fi tr 0 0 0 TJ tr tr tr TJ tr rt TJ

3 3 CD 0 3 rt Φ 3 fi Φ Hi ft⁾ rt H <i 3 3 Φ ≤ fi 3 0 Φ Φ Φ ft⁾ Φ CO φ

Φ ft rt- 3 =^> 3 fi 0 rr 3 rt μ- ft ft⁾ 3 TJ 3 3 Ω Φ fi fi 0 ro ft⁾ cr 0 rt ft⁾ ft⁾ fi 0 ^ Ω cr • H rt ft⁾ 3 CQ Ω TJ Φ Φ TJ ft⁾ ft⁾ 3 i 3 Φ fi 0 3 rt 1-3 rt 3 rt fi φ H Φ TJ f-3 3 f-3 tr rt tiΦ 0 fu H < ft⁾ Hi cr rt- 0 CD X ft⁾ μ- tr μ- ft⁾ tr W CD 3 CD ii tr rt tr Φ μ- ro 0 ϋ 3 Φ μ- fi μ- ro 3 ϋ Ω Ω ft⁾ 3 0 μ- 0 rt ro Ω 3 0 Φ Φ Φ 0 fi μ- fi rt fi 3 rt Ω 0 ft 3 rt 0 ft⁾ φ 3 o 3 μ- rt Ω fi 0 ft⁾ 3 < fi TJ 3 3 ft ft⁾ ^ ft⁾ 3

3 CO tr 3 fi f-3 0 TJ tr 0 Φ 3 ft φ μ- TJ 3 3 ft⁾ Hi μ- 3 rt 3 μ- tr ro ft⁾ TJ fi tr rt 3 Ω 3 fu ft⁾ 3 ft⁾ Φ ro 3 ft ft⁾ Φ Φ fi ft⁾ H 0 3 rt TJ Φ tr

3 Φ Ω 3 3 μ- Φ rt 0 ft⁾ 0 fi rt TJ rt rt Φ fi rt rt rt cr 3 fi ft⁾ tr ϋ s; φ cr Ω m fi 3 ti^¬ φ tr μ- X ft Hi rt 3 μ- Φ ft⁾ μ- fi rt • • ; 0 3 rt Φ Φ 3 0 rr ft⁾ fi ft⁾ ro ft 3 φ 3 r Φ φ fi X CO ti^¬ 3 <! 0 X 0 3 rt ft⁾ Φ fi Hi TJ ft rt 3 Φ

Ω 0 μ- fi ϋ CO ro D • 0 rt ro CQ cr ft⁾ 3 O fi μ- rt tr rt CD φ φ ft⁾ Φ rt

Ω fi rt ro 0 φ TJ rt 3 Ω 0 fi 0 μ- Φ Hi Ω CO μ- μ- Hi ϋ fi <! rt ft⁾ Ω

0 ^ Ω 3 fi 0 tr Q μ- ft⁾ fi ft⁾ ft ft ft⁾ s; CD 0 rt 0 fi rt μ- tr μ- 0 fi ft⁾ TJ ft⁾ tiCO φ rt rt rt 3 ro ft⁾ 3 μ- ft⁾ μ- 3 Ω rt μ- 3 0 fi Φ μ- Ω μ- 3 0 ft fi 0 3 Ω CΩ 0 tr CD 3 3 cr ft⁾ 3 - ft⁾ O rt ^ φ ft Φ φ CΩ ii ft) rt ro CD ro ft⁾ μ- ft⁾ H TJ Φ O ft O φ cr Hi 3 rr ft⁾ ft⁾ ft⁾ CO 3 ft

3 μ- ft⁾ CD ft⁾ ft⁾ 3 cr ft ro O tr rt TJ 3 Φ o 0 Hi cr ^ cr Ω Φ ft⁾ ≤ φ μ-

Ω 3 CO μ- O ft ft Q fu rt tr rt Φ rr <! fi O cr Φ ^ 0 Hi 0 ft⁾ 3 o ft⁾ 3 ro Φ o tr CD μ- CD φ μ- CO ft ft⁾ ro O ϋ rt φ 3 fi Φ rr 3 μ- 3 fi ft 3 3 ft⁾

3 w O rt rt fu μ- ft μ- ft⁾ 0 ^•^ ft⁾ fi μ- rt lifi TJ 0 φ CQ ti¬

5! CΩ CD φ ^ 0 TJ μ- rt tr μ- 3 TJ ft⁾ rt rt rt Φ ft⁾ Φ Ω rr CO fi ft ≤ ft ro μ- li^• cr fi ft⁾ 0 rt ro 3 μ- tr rt rt μ- X 3 ft⁾ tr Φ ft⁾ rt μ- μ- Ω 0 rt CΩ rt ft⁾ Hi Φ r Φ fi 3 ft⁾ Φ μ- ft⁾ fi 0 μ- tr rr 0 ft⁾ ^ Ω CQ 3 O 3 fi 0 tr 3 rt 0 ^ rt ft⁾ 0 Ω D ft⁾ 3 10 φ Φ 3 tr TJ tr 3 Ω Φ Φ 3 Φ 3

TJ tr ϋ TJ μ- μ- μ-¹ CΩ Hi 3 Ω 0 ft 3 TJ Ω Φ ft⁾ ft⁾ Φ 0 CQ 3 3 ft Λ 3

TJ • ro fi rt rt φ μ- 0 ft⁾ ro 3 ft Ω Ω TJ TJ 0 o ft fi 3 rt 3 rt Φ 3 ft⁾ W fi rt 0 tr CΩ Ω 3 ϋ CO μ- 0 ft⁾ ft⁾ Φ fi Φ rt ft ^ TJ CO ^•^ Ω 3 μ- ? Φ

Φ H 0 tr rt- Φ rt 0 CQ CQ CD rt ft 3 ii H - TJ < X 1 0 3 φ tiΦ fi Φ ft rt TJ Φ ro tr rt 3 rt Ω TJ μ- Φ rt CO ft⁾ 3 μ- tr ϋ rt 3 rt ro Ω Φ rt

Φ Φ Ω 3 Φ tr TJ ro tr 0 rt Φ 0 cr ^ 0 3 cr tift⁾ μ- Φ Φ ft tr ft Φ μ- tr tiΩ fi rr tiCO fi ft⁾ 3 Φ 3 0 Ω 3 ft⁾ φ 3 Φ ro rt fi μ- Φ CD Ω rt μ- ro ft⁾ ft⁾ ft⁾ ro φ Φ rt rt- TJ μ- ft⁾ 3 Hi t μ- fi rt ft ft⁾ 3 rt CΩ o CO fi 3 rt 3 ft fi ro 0 TJ 3 rt Hi ft Ω 0 CD 3 ft⁾ tr μ- ft ft⁾ CQ CO O μ- 3 TJ

3 μ- ft tr Ω fi Ω Φ titr μ- ft⁾ fi TJ rt 3 Φ CQ ft ft 3 rt tϊ CO 0 TJ μ- ft⁾ 0 1 cr tr μ- ft⁾ ft⁾ fi ro ro Ω Ω CO fi φ Φ TJ ro Φ fi ft ft) Φ rt ft⁾ μ- CD 0

3 3 rr X μ- 3 3 =^> rt CΩ fi 0 φ fi rt Ω fi ft⁾ rt 3 rt < Φ rt TJ tr tift CD CD

Φ rt Φ 3 CQ tr μ- 0 TJ μ- 3 3 μ- tr μ- 3 ^ ≤ Φ 0 μ- CQ fi ro ro Φ μ- CΩ ft Φ Ω 0 CD φ Ω μ- 0 3 tr ro 3 TJ ft Φ Φ l-h Φ 3 o rt Ω CQ Φ 0 fi cr μ- fi 0 ft rt Φ 0 Ω 3 1 >< i Hi 3 μ- ft μ- ft Φ fi s; Ω φ Ω Φ Hi CD fi ft⁾ cr fi 3 ft tr Hi 3 tr CΩ CD o rt 3 0 Ω μ- 3 0 0 0 Φ ft⁾ •<; Φ cr Φ

3 ft⁾ Φ ft ro Hi • 3 μ- TJ 3 0 fi Φ CQ 0 TJ ft⁾ rt - fi 3 0 Hi μ- CO μ- CΩ TJ φ rt Φ fi • Φ μ- 3 Φ ro 3 3 fi 3 Φ μ- fi X 3 cr <! rt ft tifi φ rt

Φ μ- Ω <! ι-3 Ω CD Ω ft fu μ- ti^¬ fi 3 "< H TJ 3 rt rt μ- Φ ro O O

CO <! ft) μ- CO ι-3 tr rt rt μ- 3 CO rt μ- rr ft⁾ Hi Φ fi 3 ft⁾ tr 3 CD 3 3 IQ 3 ι-

Φ 3 Ω φ rr Φ ft⁾ tr Hi CD TJ μ- 3 r rt 0 0 Ω Φ μ- μ- φ CQ 0 rt fi Φ μ- tr

0 Φ Ω φ rt Ω ro μ- ro 0 rt • ; μ- fi Hi μ- Hi Ω 3 3 μ- ft⁾ 3 ft φ fi *< cr • 3 CD O Ω Ω o Ω 3 rt 0 O 3 TJ Φ ft⁾ CD TJ μ- Φ Hi 3 0 φ

Φ ii ft⁾ rt ro ω til μ- - tr rt 3 ft⁾ CD μ- fi tift⁾ r 3 • ; er 3 fi c 3 ft μ- ft 0 rt CD ^ μ- Hi Φ rt rr rt 0 φ ft⁾ ro μ- li 0 μ- μ- ^ rt Φ φ Φ ft⁾ rt ft fi tr CQ CD 3 rt μ- CΩ tr Φ μ- 3 3 cr 3 rt fi Hi 3 3 μ- <!

^ μ- ft⁾ Φ 1 tr Ω 0 φ O φ rt ft⁾ 1 φ iQ CQ Hi

1 ro 3 3 1 X ft CΩ

retrieved from a list in the device. This is, however, less secure. The operation code can also be generated by some external unit with which the hand-held device communicates . The person-specific information is preferably stored in association with the device's unique identity so that this can be used to obtain the person-specific information. For this purpose, the method preferably comprises the step of transmitting to the additional computer and to the party a device identity which uniquely identifies the hand-held device and with which the person-specific information is associated.

As an alternative, the person-specific information can be made available by the device retrieving it from a memory in the device and sending it to the party. The person-specific information must then be programmed into the device, preferably by the user, which means that such programming must be supported.

As a further alternative, the device should be able to retrieve the person-specific information from some external unit, for example from the additional computer, and send it to the party.

For certain operations a person can have more than one item of person-specific information that can be rele- vant for the carrying out of the operation. For example, if the operation is a payment, the person can have different accounts from which payments can be made. These can be stored in the additional computer where they are associated with the device's unique identity. The choice of what person-specific information is to be used can be carried out in various ways . One variant for making the person-specific information available comprises identifying the person-specific information from a plurality of items of person-specific information on the basis of the coordinates which the position-coding pattern codes. Another variant is that the step of making the person-specific information available comprises receiv- OJ ω CO CO μ> in o in o in o in ft) Ω fi TJ CΩ rt μ- <-r ft) rt ≤ CΩ rt ti^¬ tr μ- ft 0 fi ft u TJ Ω fi <J ft Ω TJ 3 μ- Hi μ-

3 Φ Φ ft⁾ TJ tr 3 μ- tr μ- Φ ft tr ro ft⁾ 3 μ- TJ Φ φ 3 fi 0 Φ μ- ro ft⁾ fi Φ 3 0 3 fi rt O Φ Hi O TJ Φ rt ft) 0 Φ fi 3 μ- Ω φ CQ ft μ- 3 Ω 3 0 rt Hi fi CQ o 3 ft) ti^¬ 3 O 3 ft) tr CD fi 3 ft rt ft⁾ ϋ ft) Ω CD Ω ft⁾ ro μ- CQ rr 0 o CΩ ft ϋ ii ft r . 3

TJ μ- rt r t φ TJ 1 μ- ti^¬ ft⁾ ti^¬ fi ft⁾ μ- Φ ti^¬ Ω fi 0 ϋ ft⁾ Hi φ 3 Φ fi Φ Φ 3 CD rt Φ φ CQ fi rr fu ro rt ro μ- 3 fi ro > φ Hi ft) ft > 3 rt fi fi CQ CQ Ω 3 < ft⁾ rt *< < fu 0 0 §^• ro ti^¬ ft μ- C^Q Ω cr CQ CQ 3 CO Ω 0 3 Ω ft⁾ μ- 0 ft) Ω rt μ- rt 0 μ- Ω 3 ft⁾ ft rr ro 0 Ω ro μ- μ- Ω ft⁾ fi ft Ω rt 0 3 rt CQ rt 0 μ- 0 Ω μ- ϋ μ- Ω tr Φ 3 μ- ft ft 0 3 rt 0 ft CQ ft⁾ 3 rt 0 3 3 Φ O μ- 3 μ- 0 O fi 3 φ 0 Φ 3 φ 3 Ω Ω 3 0 fi 3 CQ 0 ϋ ft Φ rr CD fi 0 rt

0 0 ft rt 3 ft •> μ- μ- 3 rt tr ft 3 μ- ft ft) ft) CQ ft X μ- Ω ft 3 Hi tr

3 ft ft) μ- (1- tr μ- rt ft ti^¬ μ- - ro CD ft⁾ 3 ft⁾ μ- cr -> Φ CQ ft⁾ μ- φ ft⁾ Ω ii μ- i Φ

CΩ 3 tr Φ ft cr μ- tr CD ro ro ift Ω < μ- 3 0 1 3 0 3 X 3 tr μ- 3 0

^'Hi TJ CQ Φ ro Φ 3 Φ 0 3 3 3 Ω 0 μ- 3 TJ ft⁾ CO CQ < TJ CO 0 rr CQ Φ TJ cr CQ 3 TJ μ- 0 fi ft 3 μ- rt φ rr ft Ω cQ fi * ro fi o ft pi Ω μ- Φ Φ

Φ fi O rt o Φ rt 3 rt 3 rt μ- 0 ft ro ro 0 3 CO rt O fi CQ 3 rt 3 Φ CD ft rt ft⁾ fi ft 0 TJ < μ- CQ tr Φ tr rt Hi μ- fi CD CO 0 ft Φ ti^¬ 0 Ω ft O ti^¬ _^ 0 CO ft CO 3 Φ μ- rt Φ rt fu

^ ft ft⁾ 3 3 rt ro Φ Hi 0 ro CD ft) TJ O φ Ω ft⁾ fi Ω

^ fi s rt TJ φ Ω Ω r ro Ω s; 3 ft) CO 0 fi tr ft⁾ ft tr rt cr ft⁾ 3

0 fi rt ft⁾ Φ Φ ft 0 φ 3 ti^¬ 0 ^ rt 0 D fi Φ Φ 0 0 3

3 <! CD rt rt Φ fi rt Hi fi rt ro 0 rr - fi Hi Hi μ- CO Hi cr fi <! rt fi μ- ft⁾ μ- 3 μ- H ≤ fi <; X rr 0 CD μ- fi fi fi ft⁾ X 0 μ- 3 fi ro ft 0 ^ CΩ Φ Φ rr ft⁾ rt Ω tr X 0 φ tr μ- μ- Φ fi 0 rt μ- ft ro 3 :> fi Hi CQ φ fi 3 rr ft μ- Ω tr Φ μ- rt 3 ft⁾ μ- φ Ω 3 3 ^< N μ- ft⁾ ft rr Ω rr Ω <! ft fi u 0 Ω fi μ- rr ro C n rr ft Ω φ CD 0 rt 1 ro 3 ft 1 μ- O 3 tr 3 O μ- Φ rt fi 0 ft) ft rt o tr Hi μ- tr ft⁾ μ- TJ rr CD Hi ft ft⁾ μ- rr Ω 3 ft) 3 fi Ω < tr Ω Φ 3 3 ^ μ-

TJ ft) μ- 3 cr ft 3 Φ Φ TJ 0 ti^¬ 3 Φ tr Ω X ft) μ- ft Φ μ- 0 ft ft⁾ Ω ii ft) Ω D Φ CQ μ- ft⁾ CQ fi φ fi cr ro CQ Φ μ- CD rt μ- CO Ω ft⁾ 3 ft⁾ tr CΩ 0 Φ

0 3 0 TJ H CΩ Φ rt ft⁾ TJ Ω ^ CΩ ft 0 ϋ 3 TJ 3 ro CΩ TJ μ- ro TJ Hi ¹ ft ft 3 Φ ft 0 ft⁾ rt rt Φ μ- Φ 0 TJ 3 CQ Φ Hl CQ H- TJ 3 3 3 Φ 0 H

3 TJ o Hi CΩ cr t tr μ- fi Hi ft⁾ ft⁾ Hi ft φ μ- Ω O 3 Hi Φ ti^¬ Φ i Ω μ- Hi

Ω S H rt 0 Hi φ ^ ft⁾ Φ 0 CΩ μ- Ω μ- Hi Φ fi 3 TJ rt H ft⁾ ft 0 Ω ro ft⁾ 3 ro rt rt rt tr μ- 3 3 CD 3 0 Ω tr ft 3 <! ft⁾ CQ O μ- fi rt fi 0 ft) Φ rt μ- CO O rt rt rt φ TJ 3 ro ft⁾ μ- rt CΩ 0 μ- TJ Ω 3 ii 0 3 tr

=5 Ω φ Hi rt tr tr - Φ Ω μ- 0 <! ft⁾ Ω μ- CQ CQ Hi 3 0 ft⁾ μ- 0 μ- φ ^ μ- Hi CΩ Φ tr tr co tr Φ rt Φ fi ft⁾ s 3 Hi μ- 3 TJ φ 0 O μ- TJ CO ti^¬ 3 Hi 3 3 N μ- rt φ 0 rt CΩ 3 tr Hi Ω 0 3 0 er rt μ- ro μ- 0 3 Φ rt 0 TJ

Ω μ- ft⁾ tr TJ TJ tr 0 0 0 rt ro 0 CD 0 ft h-¹ rr Φ rt ft rt rt rt ϋ Φ ft tr Hi ro tr CD 3 Φ TJ 0 rt ft⁾ Φ 3 cr fi tr TJ μ- Hi μ- CQ ro Φ 3 μ- μ- tr tr • ; ft Φ fi fi CD tr fi 1 φ μ- 3 Φ ft ro rt CQ φ 0 0 ft⁾ Φ Φ μ- 3 TJ CQ μ- o μ- μ- o μ- Φ (ϊ TJ CD CD ft) fu H μ- ft⁾ 0 u μ- 3 3 3 rt μ- 3 CD μ- Φ 0 co tr 3 3 ft rt ^■ : Φ TJ Ω rt ft rt ft⁾ 0 μ- fi rt 3 rt 1 μ- μ- tr 3 3 μ- 3 fi 3 ft) ft < 3 μ- TJ fi φ ft) rt H- Φ ft⁾ rt 3 TJ 3 <! μ- Ω ft⁾ 3 3 ft⁾ 3 <! CΩ 1

TJ fi μ- Φ Ω 0 ft) cr CΩ Ω fi rr 0 < cr μ- 1 H rt- CO -> ro 3 0 CQ <! 3 rt CQ φ 0 CQ fi ft) Ω 3 rt 3 fi * 0 μ- fi Φ 3 μ- ft⁾ 0 Ω 3 ro φ ro 3 CQ ft TJ Φ ft tr f-3 3 3 TJ

0 o ft⁾ rt . 1 rt 3 Hi μ- *• Ω CD 3 0 fi 3 fi fu rt μ- ϋ ft) 3 1 φ tr ft) rt 1 Φ

< rt f-r μ- Ω ^ 3 1 μ- φ 0 Φ ro ft ft⁾ ft < C^Q μ- rr 3 O 3 rt tr Φ μ- CΩ Ω μ- Φ μ- O O CQ Ω ft §: ft) CD Hi μ- φ μ- rt 0 rr IQ ft μ- Φ tr Ω 0 TJ μ- ft fi 0 3 ft μ- ft⁾ TJ 3 CD € μ- 3 μ- ft o 3 Φ 3 O o i— ■ fu TJ 0 3 Φ Hi ro μ- 3 μ- 3 3 Φ μ- o Φ CΩ ft⁾ rr ro cQ rt Φ O ^ TJ Ω TJ 3 ft 3 fi 3 Ω μ- ft N 3 CD Ω 3 3 fi 0 3 μ- -<; r CQ 3 3 ft⁾ rt ro •- ft 0 TJ μ- Ω

Φ Ω rt CQ fi μ- Hi ti^¬ Ω ft Ω ft TJ 0 ro rt φ rt _^ fi ft 1 CQ 3 rt Hi s ft 0 tr Φ 0 Hi 0 0 μ- tr ft⁾ o μ- tr rt ti^¬ ft⁾ rt Φ tr fi ti^¬ tr μ- μ- μ- 3 μ- 1 Hi μ- fi er Hi ft) ft⁾ 0 rt Hi cr 3 μ- tr ro Ω rt tr 1 φ fu ro φ Ω 3 rt tr 1 CΩ Ω 3 ti^¬ rt 3 1 φ 1 CQ 0 fi 0 μ- H- μ^j 3 fi 1 tr ^ ft) ro ft 3 3 0 co ft

1 ft 1 3

a position-coding pattern which codes a plurality of coordinates which represent an instruction to a network- based system to carry out an operation regarding said goods or services using person-specific information pre- viously stored in the system, which, person-specific information is associated with a unique identity of a read- ing-off device which a person who wants to carry out the operation uses to read off the position-coding pattern.

The advantages of these aspects of the invention are apparent from the discussion above. What was said concerning the method is naturally also applicable where appropriate for the product, the system and the device. Brief Description of the Figures

This invention will be described in greater detail in the following with reference to the accompanying draw- ings, in which

Fig. 1 shows an overview of a system according to an embodiment of the invention.

Fig. 2 shows a product according to an embodiment of the invention. Figs 3a-c show examples of how the virtual surface can be arranged.

Fig. 4 shows an overview of a system according to a second embodiment of the invention.

Fig. 5 shows an embodiment of a device according to the invention.

Fig. 6 shows a flow chart of an example of a method according to the invention. Description of Preferred Embodiments of the Invention

Fig. 1 shows a network-based system for carrying out of operations concerning services or goods. In order to simplify the description, it is assumed in the following that the operation to be carried out is a payment.

The system in Fig. 1 comprises a product 100 in the form of a sheet of paper, on which there is a printed advertisement for a service in the form of a subscription to a Pay-TV channel. The advertisement specifies in the ω ω CO CO H> H in o in o in in

that are connected to the system. For each pen's identity number there is also stored at least one item of person- specific information, which in this case consists of an account number and name and address of the pen owner. The third computer belongs to a party in the system who is responsible for the offer in the advertisement, who is to ensure that the service is provided and who is to receive payment for the service (below also called the advertiser) . Now assume that the company TeVe AB has bought the right to use a particular coordinate area on the virtual surface and the subset of the position-coding pattern corresponding to this, and that the company has in addition decided to use the coordinate area to make it easier for potential customers to access their Pay-TV channel. Advertisements are then printed with payment boxes 102 with the relevant subset of the position-coding pattern. In addition, the first computer 106 is informed that the coordinate area is to be used for a payment operation. In the first computer 106 information is then stored to the effect that the coordinate area in question belongs to TeVe AB, an IP address of TeVe AB's computer 110 to which the electronic pen is to send information, and information to the effect that the coordinate area in question concerns a payment operation, i.e. information concerning which instruction the coordinate area corresponds to. Now also assume that the pen owner 104 reads the advertisement and wants to have access to the advertised Pay-TV channel . He takes his pen and makes a mark in the payment box 102 with a pen point on the device. The part of the position-coding pattern in the payment box which lies within the field of vision of the pen is continually recorded while the mark is being made.

The marking means an instruction to the system to the effect that the pen owner wants to buy the service in the advertisement and gives permission for money to be taken from the account the pen owner has previously ω ω to CO H H in o in o in o in μ- rt Φ S ft⁾ Ω er cr Hi μ- rt 0 3 rt 0 3 μ- Hi Ω ft 0 μ- cr ft ti^¬ Ω fi tr rt fi tr CΩ μ- Hi μ- O μ- Φ ii 3 0 s; 0 tr 3 3 co 0 0 μ- :^> ft •<: μ- ro μ- φ ro tr Φ μ- 0 Hi rt fi 3 0 ft⁾ CQ 3 cr Φ rt ii 3 3 3 φ 3 fi ft⁾ Ω Φ Ω

Ω CΩ 3 Φ r ft⁾ TJ 3 fi 3 tr φ μ- tj¹ ft⁾ 3 TJ ft⁾ Φ 3 rt ft⁾ 3 rt 0 TJ 0 tr rt Ω 3 3 φ φ ft ft⁾ φ fi μ-¹ o <! Φ ft⁾ 3 tifi rt rr rt- Φ fi fi μ- fi

0 rt rt rt ft tis! rt tQ CΩ H φ s; μ- H fi TJ rt ti^¬ ro H μ- Φ ro si ft ft 0 ft ft μ- ϋ 0 rr 0 ro tr H 3 ticr tr Ω Ω 3 ft⁾ Hi ft⁾ μ- ro D O 3 rt CD μ- tr φ <! φ Φ

CΩ Φ rt Φ 3 f φ μ- μ- ro 3 φ 0 ft⁾ TJ Φ rt 0 fi Hi • ! TJ rt ro s: ft μ- 3 ft ft rt rr 3 Ω fi fi rt 3 3 tr fi rt rt O 3 cr rt Φ rt 3 μ- ft rt ft⁾ tr fu TJ 3 H Φ CQ rt Ω TJ 0 tr tr φ μ* Φ rt tr 3 3 tr ft rt TJ ro μ- μ- μ- Φ rt Φ 3 o rt ft ft O 0 tr 3 O Φ Φ ft 3 rt o tr ro 3 Φ Φ rt tr fi ft rt 3 fi 3 3 3 σi tr ft⁾ Hi 3 3 φ φ φ Hi Φ rt O Tl 0 Φ 3 rt Ω tr φ *<: φ CΩ μ- r •• Φ rt fi Hi ti- TJ Ω ti3 Hi tr 0 TJ 0 ro rt <! rt rt ft⁾ ft⁾ φ rt CΩ Φ ft⁾ Hi 0 μ- ro fi CQ rt φ 0 ro rt rt CO CQ Ω μ- Φ ft⁾ ft tr μ- O 3 tr ft CΩ Ω fi μ- TJ • 0 3 H fi ft φ tr 3 3 fi 0 tr Φ . 0 fi fi rt ( Φ TJ φ 0 3 φ

^■<; CO 0 μ- μ- rt Φ fi 3 3 Λ ft Φ 3 3 Φ 3 0 CO tr rt CQ Φ 3 rt

0 3 CΩ ft 3 3 ft⁾ 3 μ- 0 3 μ- rt ft H fi rt 0 Φ Φ 3 μ- CO tr tr CO fi Ω ft φ Hi Ω Φ CQ 0 rt μ- CO Ω Ξ 3 3 tr Φ CQ 3 ft Hi ϋ rt ft ro Φ Φ ro μ- H3 3 tr fi fi X μ- fi μ- fi TJ 0 3 μ- Φ Φ Hi μ- Ω Hi 3 tr H Φ X fi Ω

Ω ft⁾ Ω Φ rt μ- φ Φ ft⁾ 3 ft 0 Φ H 0 ro Ω Hi f-3 rt 3 0 rt μ- Φ O 3 ft⁾ 0

0 rt 0 < μ- CΩ ft⁾ Ω 3 CQ ro 3 ft ft⁾ fi fi ft⁾ rt TJ φ φ tr ft⁾ tr ϋ Ω rf^ rt μ- ft 0 3 fi μ- 3 Φ rt ti^¬ Φ TJ fi • ; ft "~ rt tr Φ Ω < μ- ti^¬ TJ Φ CD 0 TJ μ- 3 ft Hi ft ft 0 TJ ^ 0 ro μ- CO Ω μ- μ- CQ μ- Φ 3 rt φ co ro 3 rt ft ft⁾ ϋ rt fi ro 3 3 > TJ CO < φ rt rt ft⁾ 3 ft⁾ 3 O tiTJ Φ rt Φ ^•<: rt φ rt Ω ft (1- ω 3 φ φ - O O 3 3 ft⁾ 3 3 TJ rr > Ω ft⁾ ro Φ Ω CQ rt Ω tr Ω tr O

≤ Φ 3 fi ft⁾ CO O ft tio φ 3 tr ω fu fi fi 3 O . Φ φ 3 Φ CD Φ 3

Hi μ- fi rt ft⁾ 3 μ- ro μ- tr fi ro tr ^ 3_^ rt ft⁾ CD ro 3 fi μ- 3 TJ fi rt tr tr rt ft⁾ 3 3 3 φ ft Ω μ- μ- μ- rt CD φ ft⁾ H TJ f-3 3 < CO rt TJ

0 tr H Ω Φ rt CO o _u ft⁾ Φ μ- 0 0 ft⁾ 3 tr Φ tr ro tr φ

3 o rt fi 0 TJ fi rt TJ fi Ω fi 3 fi ro tr μ- rt ft⁾ μ- rt σi tiφ ft⁾ CΩ Φ Ω ft⁾ 3 ^ φ n rt oo 3 φ Φ tr ro ro ft⁾ Hi ro ft⁾ N tr ft rt O "" ro CΩ 3 fi o rt fi ft⁾ tr μ- ft⁾ fi CD Φ 3 ft⁾ fi Hi μ- ft⁾ TJ rt ft μ- φ ft fi φ ft rt 3

Φ s; (Ω 3 Ω ft⁾ TJ CQ CO fi 0 fi tr tr ft 3 fi μ- μ- tr 0 ft rt O μ"

TJ rr ft 0 rr O Hi ro μ- fi 3 Ω 0 Φ fi CQ 0 φ CQ rr rt μ> Ω ft Φ Hi tr ■ . o fi TJ Φ ft⁾ ft μ- 3 0 Φ ft⁾ ft⁾ 3 Φ TJ CΩ μ- o 0 Φ Ω Φ • 00

Φ φ fi ft⁾ Φ 0 CQ fi rt CO ft rt rt 3 ro TJ CO rt Φ CΩ f-3 Ω H- σi 0 rt- TJ rr 0

< 3 Φ TJ 3 3 φ 3 tr φ tr μ- - Φ CD tr fi Φ tr CD - ϋ ro 0 tr 3 TJ f-3 ft⁾ μ- ft⁾ ^ μ- ro Ω 0 φ 0 tr 3 . Φ ft⁾ ft⁾ < ft fi CD φ TJ Φ tr CO

0 CΩ rt li CΩ Ω Hi 0 3 3 3 Φ μ- rt 3 φ rt Ω rt μ- 3 μ- 3 3 Φ

3 tr rt μ- 0 fi Hi Ω fi rt TJ 3 TJ μ- ft tr tr 0 3 μ- rt TJ tift⁾

CO μ- Φ ^ 3 CO ft 0 0 μ- ft⁾ Hi ft Hi o ro 0 ro ro cQ ft⁾ 3 μ- φ ro 0 CO CO ft Hi Φ Φ 3 ft⁾ 3 rt CO X fi μ- 0 ι . 3 3 rt td Ω Φ ti^¬ ro 0 3 fi $. Φ Ω

0 φ 0 rt 0 3 Hi *< μ- 3 O D fi tr • fi X rt ro CO 3 3 fi 0

Ω 3 TJ 0 fi rt cr rt T3 μ- 3 Φ 3 TJ 3 μ- CD μ- Φ ro ro tr CD t μ> Φ < Ω

Ω rt Φ 3 ^ tr H fi ft⁾ TJ 3 ft⁾ co 3 f-3 Ω ft φ z Ω o fi μ- μ- ft⁾ μ- fi rt ft⁾ rt Φ ≥! 3 3 rt rt ft⁾ rt μ- CD tr ro fi ft⁾ tr 0 oo Ω ft⁾

CQ rt ft⁾ tr rt O CQ ft⁾ ft X rr ^■ : μ- Ω ft iQ rt Φ μ- 2 fi μ- ft tr Φ ti^¬ μ- X ct φ μ- CQ Φ Hi Ω rt 0 Φ Φ 0 ft⁾ ro 3 O <! rr 3 Φ Ω μ- ft⁾ ft⁾ ro o μ- O φ 3 μ- O μ- TJ tr TJ ft 3 fi 3 Φ i Hi ro 0 μ- tr 3 CQ CD μ- ft

3 3 0 0 3 rt Φ ii ft 0 H •<: Φ TJ fi rt CD ro μ- ft rt CD cQ CQ

• 3 3 TJ tr fi CΩ Φ 3 Φ fi Φ o ft⁾ μ- μ- rt ft fi μ- tr Φ Ω ft⁾ ft⁾ 3

Φ rr φ ft⁾ ti< TJ ft⁾ 3 3 cr φ rt μ- CΩ Ω CD 3 0 TJ CΩ rt μ- m rr Ω H 0 fi rt 0 Ω Φ fi rt 0 ft X 0 μ- rt 0 rt rt 0 tf⁾ CD CO 0 rt tr φ 0 ft⁾ μ- fi ft⁾ 3 Φ μ- rt 3 3 3 0 rt rr fi t-t O 0 tr

Φ fi ft 1 rt 3 3 rt 0 tr rt 1 fi tr Φ 1 1 1 Φ tr CQ 3 φ 1 ro Φ

⁾ ω CO CO μ> μ¹ in o in o in o in

3 rt rt ft⁾ Ω tr tr μ- TJ H rt tr tr TJ ft⁾ rt rt rt rt Ω μ- ft⁾ ft⁾ CQ rt Hi t-3 μ- μ- ft⁾ φ tr 0 3 O Φ •<; 3 ft⁾ o tr ^ φ Ω 0 CD 0 tr tr 0 ft rt ft Ω μ- fi ro ft 3 ft

CD ft⁾ ft 3 fi oo φ fi ft⁾ Ω H- Φ Φ 3 ro <! i 0 0 < φ ft

CQ rt rt H CQ r 3 rt ft⁾ Φ Ω 0 rt 3 rt TJ 3 TJ ro μ- 3 3 ro 3 (T fi ft⁾ rr μ- ft Φ tr ft⁾ μ- Hi TJ fi Φ 3 tr CQ rr Ω 0 3 rt fi fi er rt rr Φ

CQ rt Φ 3 3 ro *τ] 3 O φ fi φ > fi μ- 3 Φ Φ ft⁾ 3 tiμ- ro rt Φ Hi s! rt μ- f-3 Φ CQ

Φ tr Hi rt rt 0 ; Hi O O fi 0 3 tr t rt Ω φ ro rt CΩ μ- fi rr tr ω rt rr CΩ φ CΩ 0 fi Hi fi 3 CQ CQ :^{> >}<: • TJ tr ft⁾ Φ fi • ; φ CΩ rt 0 Φ Φ - Φ TJ rt Φ fi ft⁾ cr μ- Ξ Ω rt 0 fi CD CQ Φ μ- Ω >• μ- 3 Φ 0 3 3 CO Φ O

0 TJ Ω 3 3 ft⁾ fi ro ft⁾ 0 tr =S 3 ro fi Ω n 3 CQ Ω rt Ω 3 rt 3 Hi 3 TJ 3 Hi φ 0 ft⁾ CQ Ω CD X • : 3 ft⁾ tr 1 ft⁾ ft⁾ Φ 3 0 0 μ- tr 3 • Φ rt rt rt μ- Ω 3 Φ rt 3 3 rt 3 x rt ft⁾ CQ fi rt μ- CΩ li^¬ 3 ft⁾ fi 3 0 μ- 3 rt 0 ro 3 tr rr r ϋ 0 3 O rt tr ft μ- μ- CD Ω TJ ft tiH 3 3 3 3 tr Ω §^• H rt Φ Φ Φ CΩ 3 tr fi tr ro o 0 rt rt Ω TJ rt φ Ω tr φ ft⁾ ro Φ 3 3 Hi rt ft⁾ rt X ro rt rt TJ Φ H φ

3 Ω 3 0 0 0 - 0 Ω ft ft⁾ fi 3 3 Φ 0 ft⁾ CΩ ϋ μ- T) TJ rt 3 fi o 0

0 H" 0 rt 3 ro 3 rt μ- <! rt μ- fi fi 3 μ- CΩ CΩ ft⁾ Φ rr Ω tiι ^ cr CΩ z 3 ft⁾ rr rt TJ - ft⁾ rt 3 tr Hi ft⁾ Ω ft Ω 3 3 O 3 rt rt Φ ^■^ 3 μ- 0 ro rt liΦ

3 TJ tr Φ tr 3 Ω tr Φ ro μ- 3 ft⁾ ro 3 ft⁾ ft⁾ ft⁾ ro tr O 3 rt fi 3 fi O ft⁾ ft⁾ Ω ro 3 3 0 Φ tirt tr Φ Ω Ω ri^¬ 3 li^¬ Φ rt 3 rt tr CO ft ft⁾ ft tr i-3 ft TJ • μ- O fi Φ ti3 TJ ro tr μ- rt μ- ft⁾ ft⁾ rt μ- ft μ- Φ rt rt CQ φ μ- 3 rt CQ 3 3

Φ ro rt Φ TJ fi φ ro CD 3 μ- CQ μ» μ- tr 0 0 fi H Φ tr rt Ω ti^¬ rt tr 0 Φ ft

0 ft ϋ 3 φ <! ^ rt Hi 3 ro H 0 3 Ω 3 Φ ft⁾ rt Φ rt 0 Ω O ro tr Φ ft

Hi CQ rt 3 H¹ o Φ m O O Hi JO - ft ft> < fi tr tr 3 rr X fi φ CQ Ω tr CQ O TJ tili O o CQ Ξ 3 ι-3 3 Φ ro CD Φ ft⁾ 3 TJ . rt Φ Hi O rt rt t-3 Φ σi Φ rt ro rt 3 fi Hi tr μ- Φ ft⁾ H- φ ^> 3 0 3 ft⁾ tr 3 fi rr 0 r μ- H li tr 3 tr ft⁾ 3 3 ft⁾ rt fi < 3 Φ 0 Ω 0 3 s: tift μ- ft 0 TJ ro μ- 0 ft 3 μ- ft⁾ Φ Φ rt ft) rt rt 3 tr Φ Φ φ tn fi TJ 0 TJ 0 Φ CD ro ft fi CΩ 3 3

CQ CQ z φ 3 rt ft μ- rt tr ft Ω •« ro 3 Φ 3 ϋ fi ft ti¬

TJ φ 3 3 rt CΩ μ- CΩ φ CD 0 μ- μ- μ- rt Φ > ft⁾ CQ Hi fi ft li Φ rt Φ rt rt ro f-¹ ft⁾ 3 . Φ rt tr ti0 ft⁾ CD X 3 0 CΩ CΩ μ- tr μ- ω 3 fi ft⁾ ft⁾ ft⁾ tr μ» CD Ω rr tr bj σ»

• : ft 0 fi μ- μ- ro 3 3 Ω CD 3 co Φ <! ft Ω 0 rt Ω rt rt 3 ft⁾ μ¹ CO 0 φ Φ

3 3 rt CQ ft⁾ Φ fi tiΩ ω ft φ Ω O 3 H- 0 μ- rr ft lio 3 Ω φ O 0 ^ ft Ω μ- ro ft⁾ μ- ^ Φ rt TJ ft⁾ ft⁾ 3 0 3 0 ft 0 TJ 0 Hi ft⁾

3 3 ft Hi Ω O ft⁾ r 3 3 3 CD TJ tr φ TJ 3 ft TJ rt 3 TJ 3 rt TJ ft⁾ fi Hi 3 TJ μ- 3 tiΦ 3 ft⁾ 0 ft ft Φ ti^¬ μ- Φ 3 ft⁾ ft 3 tr 3 ft⁾ Φ tiφ fi tr (ϊ 3 CO Hi Φ <! ft cr rt ro Ω fi • ; TJ fi tiΦ Ω tiΩ rt ^ Ω Ω s; ro fi CQ Hi er 3 ft⁾ tr Φ ft⁾ Φ tr 3 tiΦ 0 3 fi Φ ro 0 ro 0 tr 3 Φ tr fi ft⁾ ti- o

0 φ <! Φ t -. tr Ω 3 ft⁾ Φ ro Hi s: Φ O to fi TJ ft fi ft Φ Hi CΩ μ- μ- rt fi

X CD Φ Φ 0 rt cr 0 μ- ft 0 3 3 <! CO φ ro ro 0 rt <! Ω H¹ μ- Ω

CQ TJ fi rt 3 ft⁾ 0 tr CΩ CD fi Φ rt μ- t-¹ 3 H Ω fi O φ tr μ> 0 0 μ- ft⁾ rt ft⁾ tr rt H¹ cQ <! rt φ :^> Φ fi ft 0 μ> μ- o fu 0 3 CO σ 3 3 3

IQ tr l-<* φ tr ft φ Φ ft⁾ Ω rt μ- ^ Hι Φ Hi o μ¹ CD oo 3 3 rt φ rt • TJ CΩ

Φ Φ 3 0 ro CD μ- 0 tr rt 3 CQ fi o ft TJ tr fi rt tr Ω 3 li^¬

.. φ TJ Hi tr . Ω 3 3 Φ tr O O rt rt rt rt ft⁾ μ- tr Φ ≤ 0 tift⁾ ft⁾ 3 Φ μ- TJ Φ ft⁾ Φ ft li^¬ tr 3 tr tr O . tr ι-3 rt 3 CO S μ- tr ft ro 3

3 ft tiϋ ii ro 3 ft CD tr ft⁾ Φ φ ro tr tr X - ft⁾ CQ TJ μ- Φ fi Ω ft⁾ <! ft⁾ CD 3 CQ Ω rt fi ft 3 tr tr H ro ro 3 Φ Ω • ro

3 ft⁾ er rt rt Φ cr tr O 0 o Φ μ- CQ TJ ft⁾ Hi CD μ- ft⁾ (1- μ- 3 tr ft⁾ φ 3 0 μ- ft⁾ 3 Φ X 3 ii X CΩ co φ φ <: ft⁾ CD TJ CΩ CO CΩ 3 3 tr rt X 0 Ω 3 Φ TJ ft⁾ φ Ω Ω fi 3 Φ rt 3 ro ro Hi fi μ- ft Φ ft⁾ 3 0 ft ϋ < 3 3 CQ 3 fi ft⁾ σ <5 tr ro Ω 3 fi rt rt 0 Φ co

CQ ft 3 ft⁾ ft⁾ φ tiΦ μ- 3 u μ- 0 u μ- 0 3 tr 0 fi Ω μ- CD rt Φ μ- Ω TJ Ω tiϋ =^> ro μ^j tr 3 Ω s Ω CQ ft⁾ 3 CΩ 3 μ- 3 Φ r rt rt tr fi 0 3 0 ro μ- fi 0 μ- φ li^ Φ 3 Ω D ft 3 CQ CQ ft⁾ μ- φ CQ 0

Φ φ ft ti^¬ 3 ft Φ Hi 3 ft ft⁾ Φ Φ μ- 3 1 < fi fi

Ω Φ ro -> ft φ fi 3 tr Φ φ Φ rt ϋ ft Φ CQ 1 ft ft

ω ⁾ CO CO μ> μ» in o in o in o in

μ- CD rt Ω ft ft⁾ μ- H ft) T\ μ- Ω 3 μ- 3 CD tr ft⁾ TJ μ¹ CD μ- CD cr rt 0 ft⁾ μ- Ω Ω Hi

3 3 tr 0 φ ft CΩ 3 3 μ- CΩ rr μ- 3 CΩ liφ 3 ro o rt 3 ft⁾ ft⁾ μ- rt o o μ- tr Φ fi Hi ft ft CQ 0 rt φ ft⁾ H ft fi 00 fi Hi fi Ω 0 3 rt- Φ

CD fi μ- 3 3 Ω rt μ- ft⁾ rt ft⁾ μ- tr rt ft CQ Φ CD ft⁾ 0 ^ X 3 Φ ro 3 TJ TJ tr φ ft Φ 3 rt tr CO CΩ Ω tr Φ rt 0 μ- μ- ϋ fi li 3 3 μ-

Φ rt μ- CD Φ μ- TJ Φ o CQ φ ft^{) >}n Φ Hi O CO π μ- rr H 3 CΩ CQ 3 H Hi ct Ω 3 0 ti^¬ ti3 H co Hl TJ 0 ft⁾ Φ^» . 3 3 μ- 0 Hi 0 3 φ tr 1 tr ft⁾ 3 0 0 ft⁾ 0 ft⁾ Hi ro ro Hi Hi

Hi Hi O rt 3 *<j CD 3 0 cQ CO fi ft⁾ 3 φ ω rt ct rt fi 3 3 rt fi fi O μ- 0 Φ 3 tr g ft⁾ 1"3 φ Hi ft⁾ • ^ Ω 3 Hi rt CQ TJ rr μ- ft⁾ $, ct μ- μ- fi rt fi Hi fi ft Φ rt Φ 3 μ- tr ft ft CQ rt 0 ft μ- tr ft⁾ Hi Φ 3 ct 0 3 ft⁾ tr cr rt < 3 Ω 3 tr

CD Φ tr 3 φ 3 Φ 0 <! CO rt tr 3 fi Φ 3 μ- Ω CO 0 3 fi Φ Φ T Φ Hi ft⁾ O ft⁾ ro rt (1- 3 rt TJ ii tif-r TJ φ Φ Φ fi tr 3 φ fi μ- ft⁾ ft Φ CΩ 0 3 oo r tr ti0 ft⁾ Φ s; rt fu 0 rt ii CD 3 CQ ; ft⁾ cr CO l-h 3 H Ω μ-¹ Φ CD 3 ^• ii - μ- TJ

Ω φ Φ er ft r ft μ- rt tr Ω Φ rt fi Ω liμ- 0 Φ 0 tift Φ ft⁾ ft Ω 3 CQ 0 ro

0 er rt 3 0 ^>< Φ <! 3 0 μ- 0 0 - ft μ- 0 0 Ω rt < 3 ro Ω ft μ- ft⁾ ft⁾ ro Hi 3 3

3 TJ 0 tr Φ tr X Φ CD 3 co Z 3 μ- 0 fu 3 ft⁾ Φ fi rt 0 φ co 3 rr 3 0

TJ 0 X fi 3 0 ft⁾ Hi fi φ CΩ Φ CO 3 <! Hi 3 ft TJ 3 μ- 3 ft 3 0 3 TJ - μ- ft fi 0 0

3 CΩ φ φ rt X CO CO 0 rt . 3 3 ft⁾ Hi 3 ft 3 Φ > ft⁾ ft 3 0 Hi s; rt μ- CD φ φ o fi μ- rt φ ft⁾ 3 fi φ Ω CD ti^¬ Hi Φ ω tr rt rt CD ft⁾ Hi 3 ft) ro 3

Φ rt O CO σ μ- 3 CO rr H 3 μ- μ- fi ft⁾ Φ ro rt 0 ft - Φ H- tr Ω μ- • : 0 X rt ro μ- ft TJ 3 φ Φ 3 rt TJ Ω o φ 3 3 fi tr fi Φ CΩ <! Φ O 3 fi μ- ft⁾ rr fi

O μ- Φ μ- 0 3 fi ft⁾ 3 3 CD . Φ 3 ft CO ro 3 CQ o CD 3 3 ro μ> 3 H| fi 3 rt Hi φ CO rt ≤: 0 rt CD rt ft⁾ Φ ft⁾ Ω rt rt TJ Hi Φ ro TJ tr o 1 ω Hi ft^{) ^} 3 PJ tr tr ft μ- . H3 CQ rt 0 0 ro tr 3 rt X ct fi CΩ ft⁾

CTl Ω _^ φ rt td rt Φ rt rt 3 Φ μ- 3 0 Hi TJ CΩ r Φ μ- ft⁾ 3 fi 3 μ- rt tr rr ft⁾ O ^ ro u CD

O fi μ- rr $, φ Ω Ω 3 0 ft⁾ O H Φ Ω O rt TJ Φ tr fi Φ Φ μ- 3 3 μ- ft n Φ 0 Φ ft⁾ o 0 Hi tr rt fi fi rt 0 3 3 ft o ft li co TJ cr ct CD ro CD

3 μ- 3 3 o ft Hi CD 0 tr 3 rt tr ti^¬ 3 ti^¬ ft X Φ 0 ro ro

Hi 3 ct rt 0 < ft Hi "^• 0 to Φ CQ μ- Φ Ω ro ft Φ ro μ- μ- Ω μ¹ φ 3 φ < rt o CQ tr μ- ft Φ μ- Φ CΩ Hi o rt Φ ft⁾ fi ft⁾ fi 3 3 0 o 1 s 0 - 3 rt ro a ro -J fi Φ rt ^ 3 < fi Mi fi ti^¬ 0 Hi o s: 0 CD fi 3 3 o CQ ro 3 oo cr CD tr fi ϋ

3 TJ fi 3 0 Φ rt Hi CΩ ro s- Φ Φ Hi φ 0 rt μ¹ rt 3 TJ ft⁾ μ- cr Φ ro ft⁾ ro ft⁾ ft⁾ ft⁾ Φ fi rt fi μ- φ 3 μ- fi μ- Φ μ- >Q cr H tr rt 3 ft⁾ ft Φ ft rt rt Φ r rt co fi rt 3 CD 3 3 Φ 3 3 φ Ω TJ 3 o Φ ti^¬ 3 φ TJ CΩ μ- rt ft⁾ CΩ Φ Φ μ- Φ φ :> ft⁾ CQ 3 Φ 0 3 0 • ro ft 0 ft Hi ft⁾ ct μ-

0 Φ fi X CΩ 3 3 0 CD rt rt rr Ω rt CQ ft⁾ 3 tirt TJ rt ϋ Hi TJ μ- 0 3 Ω 0 rt

3 fi φ 0 ft⁾ ft⁾ Φ φ rt tr tr rr fi tr tiTJ ro H φ tr μ- tr CΩ fi Ω fi Φ

3 Hi 3 ft 3 3 rt rt rt Φ Φ Φ ^<< φ ro 3 3 fi Hi tr 3 ro M 3 rt 0 TJ μ¹ 0 ro 3 μ- rt TJ <! Φ rt μ- rr tr TJ ft Φ tiCQ O Φ μ¹ tr 3 • rt o 3 ft CD

CQ tr Ω Φ 3 rt u Φ o Hi ft rt CQ rt ro fi ft⁾ TJ o ft⁾ Φ Φ ft⁾ tr 3

H ii fi Φ fi rr μ- Φ Φ li3 0 μ- μ- ^ ft⁾ S, fi Ω CΩ 3 Φ ft ^< Φ rt μ- 0

C 3 φ Φ rt • 3 3 CΩ ft⁾ CD ϋ Hi 0 CD li0 a 0 CΩ Φ ft fi ft TJ ft⁾ Φ fi CD 3 Hi rt φ ft μ- CO ft ft rt 3 Hi 3 tili 3 rt Ω CD μ- tr 3 ft 0 Φ -

0 ft⁾ μ- > CD f-3 Ti 0 Φ <! 0 Φ ro ft X μ- 0 0 CD 0 rt 0 ft TJ CQ rt TJ fi ft ft rt φ rr μ- 0 Hi CΩ φ 3 0 fi Ω 3 μ- CΩ ft fi 3 Φ 3 μ- 3 rt φ ft⁾ rt tr Φ

Φ ft μ- 3 Φ CQ Hi Ω fi φ Hi Φ ft⁾ Hi CO ft⁾ ft 3 1 0 φ rt 0 ϋ fi tr ro fi ft μ- Hi Ω ω φ fi CQ fi rt fi 3 3 Hi Φ rt ft⁾ CQ rt CD 3 rr ft⁾ ft ro CD rr Hi ft⁾ - 3 Φ Ω O μ- μ- ft⁾ rt φ fi 0 φ Ω TJ ft⁾ Φ rt rt μ- CD O

(1- μ- φ fi rt μ> O er CΩ ft⁾ ft⁾ fi <! CQ 0 cr φ μ- 3 tr μ- 3 CD ro 3

0 0 fi ft π u - 0 ft Φ φ TJ 3 φ Φ tr 0 0 3 • ; Ω Hi ft CD Φ o CQ ro Ω 1

3 Φ € fi rt CQ ft 3 s- ft⁾ 3 CD 3 fi φ Hi TJ μ- Φ 3 Ω 0 CD rt 3 Ω tr Φ rt tr Φ μ- CQ μ- 0 rt tr 3 rt Hi 3 CO TJ :^> 0 3 TJ r rt H ft⁾ μ- tr μ- CO μ- 3 ft Φ rt liro rt ti^¬ tr μ- Φ Φ φ φ tr 3 tf Φ

Φ 3 3 Ω μ- φ 3 3 rt CΩ tr ft⁾ tr ro Ω 3 Ω 3 ι-3 μ- ft Ω tr 3 fi fi φ X 0 Φ H rt 1 rr Ω μ- φ Φ 3 φ tr 3 ro

effect that the corresponding coordinate areas represent the three different types of credit card.

For example, if the pen owner has recorded two different credit card numbers for two different credit card companies in the second computer 108, he can choose which of these is to be used for the payment by making a mark in the corresponding box in the advertisement.

For each of the goods there is also a box 208 and 210 with a subset of the position-coding pattern. These subsets correspond to partial areas in a coordinate area to which the advertiser has acquired the right.

In this example, the boxes 208, 210 and A-C constitute information fields, in contrast to the box 206 which constitutes an operation field. The advertiser can inform the first computer 106 what these partial areas represent so that the first computer can send an indication concerning this to the pen which forwards the indications to the advertiser.

In a preferred embodiment, however, the advertiser himself stores in his computer 110 what the partial areas represent. In this way the advertiser can reuse corresponding subsets of the position-coding pattern for different goods and services in a simple way.

Now assume that the pen owner wants to buy the uppermost item of clothing 202 in the advertisement and wants to use credit card B. He accordingly ticks the box 208 for the uppermost item of clothing, box B for credit card B and finally the payment box 206.

The pen decodes the received position-coding pattern and determines which coordinates this represents. In this case, the different subsets of the position-coding pattern code coordinates for points within different coordinate areas on the virtual surface. The pen recognizes that the coordinates from the payment box 206 and the coordinates from the credit card box B are such that are to be sent to the first computer 106. This determines that the coordinates from the payment box 206 come from ω ω O to μ> H in o in o in o in

3 TJ rt Ω ft Hi Ω S μ> Hi Φ rt £) tr 0 0 3 rt ft⁾ Ω Hi n- Ω Ω ft 3 rt tfl rt ct ft⁾ ro Φ tr 0 Φ 0 0 μ- o fi X 0 3 0 Hi Hi 0 tr ft fi n- 3 0 fi μ- ro n- > tr n- 3

CO 3 ro 3 ti^¬ fi 0 rt 0 ft⁾ μ- s rt φ < Φ Ω ft 3 Φ rt 3 0 Φ CΩ

CD TJ ro fi tr 3 3 rt fi φ ft⁾ CQ Φ ft ft⁾ n- TJ ft⁾ ct 3 H Φ ft⁾ ft⁾ rt fu 3 fi rt ft μ- μ- TJ tr φ <! ft o O ft⁾ li n- t Ω 3 ct Ω Ct o fi fi

CQ 0 ft ti^¬ 3 tr n- ι-3 3 ra rr ro ft Φ H <! 0 Hi ft rt rt μ- H ft⁾ rt Φ H ft⁾ ft⁾ rt o ro

Φ <! ro CQ μ- Φ 3 tr tr φ fi 3 ro ft <! μ- 0 3 rt Φ CO 3 fi 3 0 CΩ 0 ft⁾ ft⁾ μ- ro fi 3 ft! Φ rt rt φ - TJ •« fi CO s: φ ra Ω 3 n- fi ft ft Φ fi 3 rt 3 fi ft⁾ Φ 3 ti^¬ tr 0 ro ι-3 rt rt tr fi Φ ft⁾ ft⁾ 0 ft⁾ rt rt 3 ft ft 0

0 Ω rt μ> 3 TJ ro Φ 3 Hi 3 tr :^> tr μ- ft⁾ ft⁾ rt fi fi 3 ft 3 3 tr to rt tr ft n- 3 μ- o $, TJ CD 9¹ CD φ fi Φ tr Φ ra 3 rt μ- ft 3 ft rt Φ tr ro CQ 3 Ω rt 3 CQ σi ft⁾ r Φ < ft) φ ra 0 μ- ro ft •_^ C^Q μ- rt 0 0 ft⁾ ft⁾ 0 rt tr ft φ μ^J ft⁾ H rt Φ ft 3 CO 3 ct ft⁾ Ω fu 3 Φ s! ft⁾ t ¹ rt tr CQ TJ CO rt Φ tr rt- 3 rr

Φ Φ fi rt ti^¬ rt 3 tr fi ^' < ft ft⁾ tr ft tr ft ro ft⁾ ft⁾ fi tr Ω Φ n- ft⁾ Φ Φ ft⁾ Hi ft⁾ ro Ω ro

0 ro o ft rt Φ CQ rt ro <! < 3 CΩ CΩ φ Ω fi 0 rt rt fi 3 rt Hi Ω ra φ ft⁾ ft⁾ tr ϋ cr CD rt μ- fi ft⁾ φ tr φ Ω Φ rt X 3 O 3 tr ft⁾ Φ tr Φ X ii <! ft ft⁾ μ- 3 tr fi^¬ CΩ rt Φ ft⁾ fi 0 fi m rt rt 3 3 ft⁾ Ω φ rt ro Ω Hi 3 μ-

<! ra 3 ft⁾ Φ Ω φ μ- Hi ft rt 0 rt tr tr 0 rt 3 3 fi fi μ- s: rt ct ti CΩ fi

Φ Hi rt nO fi CD H CO ft μ- fi μ- s; φ Φ 3 tr ti^¬ ft rt Φ O ft! TJ tr 0 rt ϋ rt rt 0 μ- TJ er fi - Φ rt 0 Φ fi CΩ ft CΩ μ- ra Φ tr ft ^ 3 X ft! rt Φ 3 ft⁾ 3 rt tr tr fi <! φ Φ fi CΩ fi tr 3 Ω ro Φ n- Φ rt ft⁾ ft⁾ ed μ- Φ n- μ- rr ft⁾ μ- Φ φ 3 ro 3 3 ro •> Φ 0 CD fi 3 fi tr ft ft rt ft⁾ 3 rt rt Ω ft⁾ 3 ft⁾ ft^{) •}« cr TJ H¹

CQ CD Ω CD rt 3 CΩ - ft⁾ - <i < tr ft rt Hi 0 rr 0 CD ro rt ft 0 ft⁾ φ Ω fi rt 0 0 TJ 0 Ω tr ft CΩ rt CQ TJ φ Φ ft⁾ <! tr 0 TJ Ω ft 3 ft X ^ CO fi 0 μ- tr μ- £, Hi 0 H Ω 0 Φ 0 Φ ft⁾ fi ^' fi ri^¬ φ ft⁾ fi Φ ft⁾ rt Φ μ- ti^¬ rt fi 3 3

0 cQ ro rt 3 3 TJ 0 0 Ω Hi Ω Ω X rt rt fi ct 3 fi fi rr 3 tr Φ ω Φ fi

CQ fi tr Φ Ω ft 3 0 fi TJ 0 0 ft⁾ 0 3 μ- μ- ft) ti^¬ ft⁾ ft⁾ ft Φ ft⁾ nφ ra 3 Hi ft li^¬ TJ μ- fi ti^¬ fi ft Φ 3 3 fi n- ct rt 3 rt ea CD Ω rt ro CQ 3 TJ z φ CQ co n tr TJ Φ TJ f" ■ ,

Ω μ- 0 rt ro ft μ- 3 φ φ TJ ts CQ n- n- ft⁾ TJ ft tr n- 0 Ω I"¹

0 3 ft⁾ 3 S ct 0 fi μ- 3 3 μ- 3 ft⁾ 3 ti^¬ fi 3 3 Φ 0 0 Ω Φ φ ct 3 o 3 ro ω

3 ft⁾ 3 TJ ft⁾ tr 3 ft⁾ ti^¬ Ω ti^¬ ti^¬ φ fi fi rr 3 3 Ω 3 CD 0 ti^¬ Hi Ω H

TJ rt- ft rt 0 3 n- rt H ft) ti^¬ rt ro rr ro rt ro er tr 3 Ω O O Φ φ ro φ Ct rt

3 ro 0 CO li^¬ 3 tr H ti^¬ ro 0 fi fi tr fi o ft⁾ rt tr fi rt Ω 3 CD 3 X tr 3 rt ti rr ti^¬ CO μ- CO ra CQ φ o ro CD Ω Φ X CQ ft⁾ Φ cr 0 0 3 ft ft⁾ ro ft tr 3 Hi ft⁾ ro rt :> μ- rt p⁾ ti- H Φ Ω CD Ω Φ ft rt n- ra 3 ro φ 3 ti^¬ fi Hi tr cr rt ft⁾ 3 rt ft⁾ rt tr O 3 tr ft⁾ μ> CO TJ 0 Φ Φ rt Φ ft TJ 3 ft ft⁾ fi fi H- μ- O 3 ft) tr fi tr Φ 00 Φ ft o . φ 3 n- 3 tr - trJ φ rt ft⁾ ft⁾ rt er

CQ O ω Ω φ ft fi ro Φ ft⁾ tr 3 < - fi li^¬ μ- <! CQ φ 3 rr ro ft o ft Ω tr Φ rr 3 tr cr X 3 ft⁾ rt Φ 0 Φ Φ rr ft⁾ ra φ Φ rt n- rt μ- ro TJ <! fi Φ fi TJ Hi 3 μ- • Hi fi CΩ li rt ft μ- CΩ ft φ tr CΩ n- Ω μ- ro φ Φ fi 0 ft⁾ rt 0 Ω o * : 3 μ- fi μ- Hi 0 Φ rt rr TJ 3 tϊ Hi Φ rt 3 tr fi fi ft 3 μ- tr CO 0 fi 3 ro rt Φ Ω tr 3 μ- ro CD CD 0 rt HI rt • ; rt ft⁾ ti^¬ n- ft CQ

CQ ft⁾ CO o p⁾ rt Ω Ω ft⁾ li^¬ ft CO fi tr ft⁾ Φ TJ 0 0 ti rt nrt Φ CΩ tr li^¬ n- fi rt 3 tr rt Φ tr ft 3 ft⁾ CO Φ ro CO CD tr n- fi Ω Φ 3 μ- 3 n- ea rt- licr ft tr ft μ- tr μ- ft⁾ μ- fi φ Φ φ co φ rt 3 cr 3 rr CQ ro 0 φ Ω ro rt ft⁾ μ- φ ra Φ <! CO rt tr 3 ft⁾ μ- <J <! - φ tr ft⁾ 3 fi ft⁾ fi O ft⁾ ϋ Φ 3 TJ Φ tr ro φ tr co φ Φ 3 3 CD ( CΩ 'y φ 3 fi 3 s- ro ft⁾ Hi ft⁾ Z cr CΩ CD ft⁾ ft fi ft⁾ fi fi ft⁾ φ φ tr 3 Φ m μ- ft μ- rt ft⁾ ft⁾ Hi ti^¬ μ- ^ ft⁾ 0 rt rt ft⁾ Φ CO CO ft⁾ ft⁾ ft CO 3 ft⁾ n- CΩ fi CΩ CΩ n- 3 tr

0 ro fi r ro

^ *< X rt 0 TJ Λ rt φ CΩ fϊ rt ft φ Φ 0 3 Ω o μ- fi CΩ Hi tr fi rt TJ Hi 3 ft⁾ 0 - ft⁾ φ ft ft⁾ 0 rt Hi ft⁾ Hi 0 CO

3 ft⁾ li^¬ 0 Ω CO Φ Φ tr ft⁾ 0 φ Ω fi rt rt CQ rt μ- 3 3 0 tr 0 3 ft⁾

CD rt fi fi ft⁾ o ft Φ fi fi CD ro ^<< • : tr Φ 0 rt rt ft 3 ro Ω TJ fi TJ rt ft

0 rt tr Φ • 3 ro rt ft TJ TJ 3 - n- ft fi ft⁾ 3 ft⁾ tr <J tr Φ ft) TJ 3 Φ φ rt rt μ- ft⁾ TJ ro ft⁾ 3 ft⁾ ro ro Φ rt CD CD tr co 3 ro ^< li^¬ fi

3 Φ 3

that this does not need to request the coordinate information from the pen.

The boxes 208 and 210 concerning the items of clothing can be made larger and designed so that they are suitable for containing handwritten text . Instead of making a mark in the box beside the uppermost item of clothing, the pen owner can then write by hand in the box that he wants two items of clothing in size medium and in the colour blue. This is an efficient way of letting a user specify additional information. An alternative would be to code all possible options with position-coding patterns, but this would give the advertisement an overcomplicated appearance. In addition, it is difficult to foresee all the information that a user might want to send to a party in the system.

In the case of the handwritten additional information, the advertiser's computer 110 receives the coordinates that represent the movement of the pen when the additional information was being written and can thereby recreate an image of the written information which can be interpreted using an ICR program (Intelligent Character Recognition) in the computer or by a person.

In the description of both the preceding examples, the payment box is provided with a subset of the posi- tion-coding pattern that the advertiser has acquired and the advertiser himself has decided that this subset is to be used to represent a payment operation and has informed the first computer 106 of this. As an alternative, it is possible for the payment box to contain two separate subsets of the position-coding pattern, where a first subset represents the advertiser and a second subset represents in general the operation of making a payment. In this way all the parties in the system can use the same subset to represent the payment operation and can combine this subset with a subset that is specific to the advertiser. If the advertisement contains only one item of goods or one service, in addition the advertiser can select a subset within the area of the position-coding pattern to which he has acquired the right so that this subset also makes it possible for the advertiser to identify to .which advertisement out of a plurality of adver- tisements the message from the pen refers. In order for this to be possible, the pen must, however, "in this case send the coordinates which correspond to the mark in the payment bo .

Of course, the above can be generalized to apply to any operation. In addition the above "divided" boxes can contain more than two different subsets of the position- coding pattern. For example, the pattern from the three credit card boxes A-C could be incorporated into three separate payment boxes. The payment box 206 could thus be replaced by three payment boxes for payment by means of credit card A, B or C .

It has been stated above that the first computer 106 has stored information about what the coordinate areas corresponding to the subsets of the position-coding pat- tern in the credit card boxes A, B, C, refer to. According to another variant, the advertiser could use three partial areas within his coordinate area on the virtual surface in order to create three different payment buttons, one for each of the credit cards, A, B, C. In this case, it is the advertiser's computer that identifies which credit card is to be used, on the basis of coordinate information from the payment box.

As a further variant, the advertisement could contain a payment box that is coded in such a way that the second computer returns information about possible methods of payment to the pen, whereupon the pen owner has the ability to select the method of payment, for example via his mobile phone.

Figs 3a, b and c show examples of how different coordinate areas on the virtual surface can be used. Fig. 3a shows an example that corresponds to the embodiment in Fig. 1. TeVe AB has acquired the right ω ω CO CO H M in o in o in o in

rt rt TJ ct ft Hi ft⁾ •fl t TJ Φ fi μ- rt tr 0 Ξ μ- μ- s- rt TJ cr CD ft⁾ Ω ft⁾ rt f-3 ft ft⁾ rt tr μ- 3 0 μ- n- ft⁾ cr μ- μ> 3 0 X n- 3 3 ^ 3 CΩ n- rr 3 Φ TJ fi O fi tr tr μ- O

3 O rt rt Ω 0 CQ rt- fi ft⁾ LQ ft⁾ ft⁾ rt n- rt- φ φ 3 Φ ft⁾ Φ Hi

CO 3 Φ tr tr Hi ro 3 ^•» ro 3 tr ^ H u Ω rt 0 rt tr CO ro 3 Ω ft⁾ TJ rt Hi ft⁾ rt fi Φ μ- ro rt fi TJ TJ ct μ- 0 fi 0 n- fi ra n- 3 rt TJ ro fi tr

3 ft⁾ 3 ϋ rt O ⁾ ft⁾ CQ CQ TI TJ 3 0 3 n 3 μ- φ r-ti rt ti^¬ 0 s; φ fi CQ ro

0 tr μ- CD ro tr t, ¹ 0 X Φ ct • 3 n- ft⁾ ϋ rt 3 ft⁾ cr Φ 3 t-¹ ft n- 0 ro rr 3 ro Φ li0 ra Φ rt 3 ro tr ft⁾ 3 - O fi CQ H CO tr rt Φ < rt o φ H CO ro CΩ 3 ti ft⁾

3 3 tr rt ti ft> 3 φ CO • rt φ φ ft⁾ μ- Φ rr 0 σi rt ft ≤ Φ 3 ct fi ft⁾ rt ft⁾ rt ro ro rt ft rt 3 tr ct . ft⁾ ^ _^ fi 0 3 Φ fi 0 tr Hi 3 rt ti φ fi Ω o tr rt Φ tr Ω ω Ω 3 CΩ 3 rr rt n- 0 ft rr tr ft⁾ φ ft⁾

3 =^> fi (ϊ ϋ fi ft⁾ rt CΩ ti n- Φ H Φ tr rr ft⁾ 0 Φ td CΩ ft⁾ ft⁾ fi tr Ω fi tr ft⁾ fi CQ

Φ tr ft⁾ 0 ro ro fi tr rt CΩ 0 tr 3 tr ϋ fi CD ft 3 rt CO Φ ft⁾ tr ft⁾ ro rt ro μ- U⁾ rt μ- 3 CQ ft ro φ 0 μ- . TJ ft⁾ ft⁾ μ- CQ ft! Φ fi rt Ω tr n- TJ rt ft rt *< ft! 0 o

£. Ω CQ rt n- n- CQ fi rt Φ CQ fi (1- 3 tr rt ft⁾ Φ 0 ft⁾ 0 tr H rt ro ft⁾ CΩ 3 o o r Φ tr 0 rt n- φ Φ ro ffi ϋ φ tr 0 CD CD fi 0 3 ft) 3 ro Φ rt tr ti^¬ ft fi fi ft Φ 3 3 ft 3 ro ft⁾ ft ft⁾ n- rt =^> rt TJ Φ ϋ fi Φ CD tr Φ ro Φ ro Φ Ω ω 0

X Ω Ω CΩ CO rt Φ CQ tr CD tr ft⁾ 0 ft ft⁾ Φ rt 3 Φ Φ fi ft⁾ tift⁾ to 3 ti oo ft⁾ ft⁾ 3 n- tr n- ⁾ Φ φ fi 3 0 H" ft⁾ 0 3 Ω 3 CO ro n- 3 o ft⁾ φ 0 n- CO ϋ ft tr 3 0 ft⁾ 0 μ- H Ω ft⁾ Φ ft μ- fi CΩ μ- ri^¬ CD 0 μ- rt Ω 3 rt ft ft fi fi o ft ft Hi Hi CΩ 3 3 o ft⁾ Ω 3 TJ μ- 3 ft 0 > rt 3 3 0 3 rt Ω tr 0 tr ft n- CD n- ft⁾ 0 ra φ • CΩ ft⁾ φ rt 3 Φ o rr Hi ft⁾ cr fi ft⁾ CO ro Hi ro fi rt rt rt s Ω rt fi fi Ω ft⁾ ft φ CQ Φ 3 0 CQ rt fi tr μ> ro 0 ft rr 0 Ω 3

Φ tr tr 0 n- Φ 3 ft⁾ H - φ X tr μ- ft⁾ • fi TJ ft⁾ n- μ- 3 0 ft ft⁾ rt <!

CΩ Ω Φ Ω n- 3 0 ft⁾ ft⁾ 0 CΩ 3 rt 3 ft⁾ CD tr S Φ 3 <! TJ 3 ft⁾ fi 3 0 Φ 0 φ Ω tr n- ra ft⁾ CO 0 Ω TJ 3 CΩ rt rt 0 ft tr rt Ω 3 Φ ft! CQ Φ ro φ ^ Φ ft⁾ 3 fi ft Λ φ fi fi φ 3 tr ft⁾ n- tr ft⁾ rt rr O TJ TJ * ra 3 ft 3 ft⁾ tiO ft 3 rt

Hi ft TJ 3 rt ϋ 0 μ- ft tr li^¬ rr Φ fi 1— ' TJ 3 "• • ! 0 ft Φ ro 0 n- μ- μ- < n- tr o ^ M

0 CQ 3 Ω φ 3 3 r ft⁾ Φ fi φ 0 CΩ CQ TJ Φ Ξ 0 3 ω CQ Hi 3 3 fi μ- fi Ω 3 rt- 0 ro fi CQ Hi CΩ ft⁾ ft⁾ Φ fi φ 0 ti^¬ φ rr rt o rt ft⁾ Φ ti ^& K

0 tr ro 3 CO ro Φ n- μ- CΩ ft CΩ 0 lift rt ro fi μ- Φ μ> cr €, tr tirt ft rt rt 3 fi Ω ro fi 3 n- 3 n- CΩ ft⁾ <! TJ Hi ra tr 3 ft⁾ 3 3 rt 0 ro tr Φ ro tr 3 CΩ rr TJ ft⁾ ro > 3 ro 3 3 3 φ 0 φ rt φ tr TJ 3 H¹ o CO Φ cr ft⁾ 3

Φ ft) fi μ> fi ft⁾ rt tr ft tr Φ fi 3 rt rt 0 fi n- ft μ- μ- Φ μ- o Ω •<; t-> fi

CQ 3 φ o 3 π fi 0 n- rt 0 rt ft tr tr fi 0 rt CΩ fi rt 3 μ- o £. ra

Φ ^ ft⁾ σ\ ra . ro CΩ tr ft ti ft⁾ =^> n- n- Φ Φ • TJ 3 rt ft⁾ tr CQ co o n- •<; ft CQ ft⁾

CD •• ft⁾ Φ n- 3 fi ft⁾ CΩ 3 ft⁾ CO tr ii rt n- • fi rt CΩ μ- 3 Ω μ- Ω i-3 CO O Ω Hi φ φ ^ Φ CQ 0 > fi ft⁾ Φ ft⁾ n- 3 rr ft tr tiHi fi ro ra rt tr 0 rr 3 0 ft⁾ Hi ft ft⁾ fi ft⁾ TJ rt rt rt Ω 3 0 f-3 tr μ- μ- ro Hi Hi .

0 3 0 ro rt 3 ft φ ft⁾ rt *<; Φ TJ n- tr Φ ft 3 rt Φ φ 3 3 3 Φ ft⁾ fi rt ϋ CO rr (1- TJ < ϋ rt ⁾ ra tr 0 0 fi fi Φ ft⁾ rt μ- tr < ft⁾ fi Ω t-3

Φ fi ft ro ft⁾ tr 3 Φ φ tr μ> ft⁾ 3 ft⁾ Φ CD rt tr <i rt Φ Φ 0 ti^¬ rt ft⁾ φ Φ rr

Hi Φ rt n- rt Φ ti^¬ fi 3 Φ CO μ- ra rt tϊ rt Ω Φ Φ tr H 3 ro tr fi 3 μ- φ rt tr 3 CO ro rt rt 3 tr n- 0 Ω 3 CO 3 tr ft⁾ 3 ra n- ro rt s; CD ϋ 3 ro ft⁾ 3 H <! fi n- Hi μ- ft⁾ Φ 0 0 3 ft⁾ CO CD CQ Φ fi td ro CΩ μ- fi fi rt- cr Φ n- CΩ CΩ n- CΩ rt Ω 3 ft 3 φ 3 Ω Φ H rt TJ TJ rt φ 3 Hi ro TJ fi tr Φ 3 ϋ r Λ Φ n- cr 0 Ω ft⁾ tr 0 ϋ ti ft⁾ tr μ- ft μ- CD ft⁾ fi rt n- 3 tr CΩ rt Φ 3 3 rt ft rt ft ft⁾ 0 ft⁾ n- ft⁾ 0 Φ 0 ϋ μ- ro n- ϋ fi φ 3 3 φ rt O n- t ^* tr Φ n- Φ ft ft⁾ fi 3 fi > ra Hi rr CQ CQ rt 3 ra rt 3 CD rt ro ra ft⁾ ra 3 ft⁾ TJ fi 0 Φ 0 Hi ft ϋ ft ra o tr n- fi n-

0 rt tr ft⁾ φ ro rt fi Ω tr fi φ ft n- 3 μ- fi φ μ- fi rt o μ- rt ro o ft⁾ φ 3 s;

0 ft⁾ CD 3 Φ 0 Φ φ ft n- <! 3 3 φ ft⁾ 3 Φ rt tr 3 3 CD tr n- ft⁾ fi Ω ti- rt CΩ Hi n- ft⁾ 3 <! 3 n- Φ n- Φ ra ft⁾ rt Ω n- CΩ φ Hi 3 • n- rt

3 3 0 3 3 CΩ 3 μ- rt Φ fi ft CD CΩ ⁾ ti^¬ 3 o CΩ φ n- rt ro Ω rr ft ft⁾ 3 ft⁾ μ- rt fi CΩ 0 tr 3 ~ o ro fi 3 fi tr ft rr n-

H φ tr φ 3 Φ rt CO CO 3 rt Hi ra φ 3 ro Φ ft ra 0 rt ^

ω ω CO CO μ> μ¹ in o in O in o in

3 0 0 £ n- Φ n- ro TJ fi CΩ 0 ft⁾ CO rt rt tr rt n- TJ rt H rt rt cr CO 3 ct H rt ro Hi fi rr 3 <τ X Φ φ rt fi 3 rr tr 0 n- CΩ 3 O μ- tr tr n- TJ CD- tr 3 tr

3 n- Φ co ft) 3 3 0 ra tr fu ro X 0 ti^¬ φ φ ft⁾ 3 0 Φ Φ φ ti^¬ ft⁾ rt Ω rt Ω 3 Ω fi CO ^ CD ti^¬ 3 fi ro rt CD (1- Φ 3 CO rt tr tr tr rt Ω TJ 0 Φ Φ Φ m Φ Ω z 1 ro ii tr 0 CO ft ft⁾ tr ft⁾ er t-3 TJ ft⁾ Φ fi 0 :^> f-3 ft ϋ rt H li^¬ ro H ft⁾ n- Ω H Hi φ s- TJ Ω CΩ ft⁾ ti n- cr t

0 tr fi li^¬ CD 0 3 CD φ 3 tr rt <! φ 3 ra X Hi CΩ 0 rt ro fi n- Φ 0 rt Φ co 0 n-

X ro 0 TJ 3 3 TJ CD - Φ μ- 0 μ- n- 3 ti^¬ ro ft fi ro CΩ rt ϋ fi tr CT CD ft⁾ < CQ ft ft) Φ 0 μ- 3 3 fi co 3 Ω rt 0 ro ft) CΩ n- CQ fi rt tr ft⁾ fi n- 0 3 Ω Φ •

*> Ω 3 ϋ Ω fi Ω rt- 3 ft⁾ t φ Hi tr Hi 3 ft⁾ 3 tr ro 3 CD n- rt φ ra tr u> ft⁾ 1 o 0 Ω Φ n- 3 ro ro rt CD μ- rt CO 0 Φ ft ft ft TJ CQ 0 ft fi ti^¬ 3 n- CΩ rt ra ⁾ ra 3 ⁾ σi <τ Hi ft) TJ fi . tr 0 ^ CQ tr fi rt CD . μ- ro TJ 3 3 ro 0 TJ $. rr φ o φ φ Ω

TJ CQ n- 1-" φ 3 ft⁾ CD Φ 3 Hi tr <! CΩ ro TJ H¹ rt CΩ 3 ft⁾ 3 0 n- Φ (T . - 3

S- ft⁾ ≤ 0 φ 3 #> 0 3 TJ ti^¬ CO Ω 0 Φ rt μ- Ω p⁾ ft⁾ ft 0 3 rt rt CD μ- 3 n- n- CD ≤ o £ X ft) ro l > CΩ n- ft⁾ tr ft fi fi rt . ct ft⁾ ra 0 ft rr ra 0 Sj rt n- tr rt ^ rt 3 ft⁾ o • : 3 • ^ 3 fi H" TJ fi ro n- rt cr 0 ft φ Hi ra 3 Hi tr rr O 0 tr tr CQ ra ^■ : o - rt 0 CΩ CQ fi 0 o o ft cr ro ro ro 3 Ω ft⁾ tr φ Φ 3 =3

X Φ CO tr fi rr o ti ^■^ s: CD 3 ro CO ti rt n- rt 3 ct (T 3 φ CD fu ft⁾ rt fi . n- ft⁾ μ- ft⁾ ro TJ μ- μ- μ- CQ tr ft ra 3 ro tr 3 n- ft) 0 CD ft⁾ tr ft) ft

TJ 3 0 < t-3 CΩ rt TJ CΩ 3 3 φ 3 3 rt tr 0 ro 3 ro n- 0 X 3 fi φ tr ft rt co ti n- tr ι-3 0 fi CQ CQ n- X ft⁾ 3 ft TJ CΩ 3 n- ft⁾ cr Φ φ <! Φ tr

3 0 n- tr Ω Φ tr rt Ω ra cr tr CΩ - o 3 tr rt ro tr TJ rt 3 3 CD ft⁾ TJ φ X Φ tr < 3 Φ Φ Φ 0 0 li^¬ μ- Φ i-3 O O 3 0 n- 0 n- CΩ ft⁾ Φ ti ω CQ Φ 0 s; fi ft⁾

CO μ- ft CD n- M ft⁾ H¹ tr 3 3 ft⁾ 1 CD ra <! ft⁾ Ω ra 3 ft⁾ in ft) rt > ra u rt 3 ro ft n- TJ 3 Ω n- TJ 3 Φ 1 li^¬ Ω rt ro fi μ- rt o ft⁾ fi ) n- 3 n- TJ fu rt ro Ω fi 0 < 0 3 ft⁾ CΩ CQ CQ Hi 0 3 . μ- N ft⁾ 0 Φ 0 CO rt rt ra (-^{■ >}

CΩ ft⁾ 0 fi 0 3 <! 3 CQ^' φ CD TJ ft⁾ 3 ft 0 CΩ ^><: cr ro 3 fi 0 TJ ft⁾ Hi n- ra φ φ o

0 <τ < n- TJ 0 * : μ- μ- ft ^ φ 3 fi n- Hi ro ro ft Hi ft⁾ ^ 0 ϋ

Hi rt n- n- M

CQ Ω ft⁾ n- ii 3 CD Ω rt 3 ft n- ft n- ft⁾ *< ω <τ n- 3 rt € rt t tr 0 ft 0 φ 3 Ω X 0 rt ti^¬ n- 0 tr CQ rt ft rt 3 3 rt 3 ^ tr rt 1 0 tr μ- > rt φ 3 φ 0 ^ ro ^•» ft⁾ O ro Hl TJ Φ rr ro cr rr ft ft tr Φ o φ rr Ω ft) rt 0 tr ft ft rr ft⁾ 3 n- Φ fi TJ ro rt 3 ro ft) n- φ 3 n- O Ω ra tr Hi ro μ- 0 ra p⁾ X ft) 3 Ω <! 3 Ω fi ft⁾ rr rt li^¬ Ω Hi rt rt TJ 3 ft fi

3 Hi CO tr Ω φ ft⁾ n- ft⁾ Φ rt cr ro n- 0 ft⁾ 0 fi tr o n- φ ft) - rt

TJ <! H (T Ω Ω n- 0 fi X CΩ n- rt X ti^¬ 0 Ω ≤ ft⁾ rt fi Φ ft⁾ ft⁾ CD rt 3 ft⁾ Ω ft tr

0 0 CQ rt tr ft⁾ fi 3 Ω 3 ^ Φ 3 n- ft⁾ ro X 3 ft⁾ CΩ n- CQ 3 li^¬ n- rr CQ rt Λ n- Φ ra μ- O ft⁾ Φ ra rr 3 ft Hi 0 ■3 fi ra H" n- 0 e. μ- ft rt Φ Φ 3 <! μ- Ω 0 Ω (1- CΩ ft⁾ rt r CΩ n- ro 0 3 TJ 3 CD ro ra rt 3 tr 0 ft n- TJ n- n- < rt Φ ft 0 TJ rt 0 n- • n- rt C^Q fi l-ⁱ 0 ii ct tr n- 3 £. φ 0 ft⁾ ft) ft⁾ ti ft μ- μ- CΩ 3 tr φ Φ 3 CΩ 3 Ω 3 fi Φ ft⁾ 0 3 ro 0 Ω tr Hi 3 fi ct φ φ ti

0 ι . CD ft⁾ Ω CD ro TJ TJ fi ft) Φ fi ct 3 ra Hi tr ) n- n- φ ct TJ ft ft rt

3 o 0 μ- <; n- ti ti O n- rt CQ μ- Φ tr 3 rt ro TJ CO Ω 3 Ω ft) Φ ft⁾ = 3

1 > > fi ra Φ Hi ft⁾ ro Φ ra tr n- ft⁾ CQ ft⁾ CΩ tr ft fi s; rt o tr Φ 0 ti ^ rt ft⁾

Ω rt n- 3 £ TJ ra ro 0 fi ti ti^¬ rt ro ro tr tr ra ft ) 3 3 tr cr H"

0 s: CO CΩ cr Ω tr ti => n- ft 3 ft ft Φ Hi n- φ rt rt n- ω Φ Φ 0 ft μ- φ Φ ft) μ- 0 ro ft⁾ cr n- Φ ft) er 3 3 rt ro Ω tr tr n- 3 o rt 3 X ra μ- rt ϋ rt Φ rt 3 CD ^ => TJ 3 ra ft 0 ft) CO tr fi tr Hi ft⁾ Φ 3 CQ tr rt fi Φ 3

3 rr <! tr 3 n- <! tr ro φ n- fi CQ Ω rt X ro ro fi n- rt fi ft) ft) n- CD ϋ

CQ n- Φ 0 0 ft⁾ 3 <! rt Φ fi 0 tr ro fi ro 0 ϋ φ CQ TJ 3 rt cr CQ Hi ft⁾ Ω ϋ TJ 3 n- ra ti^¬ n- Hi tr <! CQ μ- Hi TJ ft TJ ra tr Hi Φ ft! ft 0 tr n- ft⁾

TJ Φ Φ fi Ω ro ft⁾ 0 n- 0 tr Hi ct ft) μ- ø⁾ Φ rt Φ 0 3 rt Ω X rr CQ Ω ft⁾ TJ CD Hi 0 TJ φ ft⁾ ft fi fi 0 0 φ . tr 3 TJ fi fi Φ rt Ω 0 Φ rt ft) . 0 < ft⁾ 3 Φ 3 ft ft ro 3 3 0 ft⁾ Ω 0 φ ii Φ 0 fi rt 3 ti^¬ ^ fi n- fi l > cr Hi ft⁾ Hi CΩ CO ft⁾ ft⁾ ro ra rt 0 3 ft⁾ ti 3 fi ^■ tr 0 ra £ ro 1 Φ ft rt o ^ 0 φ 0 ϋ 3 n- n- 3 CQ r-> 3 1 φ Φ φ tr fi Φ ι4^ fi < Hi X rt 1 0 1 CΩ 1 ft Φ

3 ft 3 3

ϋJ CO co CO in o in o in o in rt ft⁾ n- ft⁾ n- rt rt CQ TJ to rt cr rt CQ € ft n^ ft fi rt 3 - CΩ Ω £ rt rt H Hi £ £ n- Ω 3 3 n- tr n- ft⁾ co tr ft⁾ n- n- tr Φ H μ- Φ rr ft⁾ o rt 0 μ- n- tr t 0 tr tr

0 Ω t-" < 0 Φ fi J μ> ju 3 rt fi n- rt o 3 Ω Φ X oo 0 0 rt 0 Φ Φ fi n- n-

3 O TI o o 3 CD 0 3 oo rt X < 0 Ω Φ ft⁾ 0 ro fi fi tr 3 Ω Ω

3 n- 0 n- Φ Φ • tr ti ,-_^ rt ti TJ CD Φ ft CQ CΩ Φ tr tr

£ 3 cQ X > Ω tr 3 f-3 rt ra 3 cr f-3 3 Ω Φ ft Φ S! CΩ n- ft⁾ n- ι-3 ^■ 3 ft⁾ n- rt • 1 φ £ n- ft⁾ rt tr tr 3 ft⁾ tr rt μ- 0 CD Φ 3 ft⁾ tr 3 rt fi tr tr Ω rt Ω rt 3 rt tr ft 3 CΩ Φ Φ Ω 3 Φ tr 3 ϋ ft Φ rr ft⁾ CΩ tr 0 φ ra tr tr 0 tr Hi M TJ ro CD n- Φ X o cr X Φ φ fi ≤ ft 3 3 tr rt 3 ft⁾ φ Φ fi ti fi 3 Ω 3 ft⁾ n- Ω 3 Φ TJ Φ tr s; Φ ft⁾ μ- Φ tr rt tr Ω rt μ- fi rt 0 μ- μ- 3 3 r rt CD fi ft 0 TJ fi CΩ Φ Ω Z CD H- tr Ω fi rt ra CD CΩ ft⁾ 0 CD 3 Ω Φ tr 3 3 3 ft⁾ n- Φ φ 0 3 3 0 tr TJ Ω φ 0 X tr φ rr 3 < 0 CD n- rt n- n- rt Ω 3 fi rt ft⁾ Ω 0 0 0 r 3 ft φ n- £ rt ft⁾ X TJ Ω 0 3 TJ

CΩ £ 0 rt μ- CΩ 3 ^ 0 ft⁾ rt ft Φ 3 0 »&. H 3 Φ n- 3 n- ra ft⁾ ft⁾ n- TJ 0

^•> tr fi tr <! 3 tr n- μ- fi ft 3 o ft μ- ft ft⁾ rt to 3 TJ Hi rt 0 CΩ 3 3 Ω ft⁾ 3 n- ft Φ Φ rt rt 3 TJ rt 3 TJ CO n- CD n- ϋ tr φ 0 rr Hi ft⁾ ^ φ 3 ft ft⁾ Ω φ 0 tr 3 3 φ ^ ft⁾ Φ. ct 3 3 3 Φ Φ rt rt 3 fi n- Ω _^ • ; ra

3 tr fi Φ ^ n- rt rt o tr rt ti ft⁾ rt CQ tr rr 3 3 rt TJ 0 X tr

& ^ tr CD t ^* Φ rt 3 φ 00 Φ Φ Φ rt tr rt 3 Φ Φ 0 ft⁾ tr ft⁾ 3 0 Ω X rt

0 rt rt 3 φ Φ fi 0 3 CΩ fi Ω φ Φ rt o ft⁾ 5 rr ft⁾ Φ fi TJ ft⁾ £ 0 o

TJ rr 0 μ- rt Ω ϋ ft φ CD 0 fi TJ TJ 3 n- rt 3 Φ fi tr

Φ Φ <i tr ft tf⁾ CΩ ^ tr ii £ φ ι > n- 0 tr X 0 ft⁾ Φ 0 TJ TJ n- rt ra < ti ft⁾ ft⁾ fi 0 ft⁾ Φ φ CΩ o φ φ Φ rr Ω o <! tr s: CT Φ ra ^ fi 3 ft⁾ O Ω Φ 0 Φ Φ ra ft⁾ 3 tr cr φ (T oo fi Hi n- 0 oo Φ Φ 3 r e, n- 3 ti CΩ 3 ti ti CD CΩ rt o rt φ CQ n- tr - 3 ra Φ Ω ft • CΩ Φ Φ ra ft⁾ rt Φ £ n- rt μ- μ- TJ ft⁾ 3 n- 3 ft⁾ 3 μ- rt n- Φ ft⁾ fi tr φ 0 fi Φ CΩ n- 3 ft⁾ 3 n- rt ft⁾ . 3 0 Ω tr

0 Φ μ- Ω ii Φ ra fi ft⁾ ft 0 ft H tr 3 Hi 3 0 rt 3 Ω n- ti o cr 3 1

3 ^ 3 Φ O ft Φ 3 Φ Hi rt n- rt ft⁾ CQ 0 n- rt 3 3 ct ft⁾ 3 O oo 0 Φ ft 3 f° . rt ft 0 ft Ω Ω Hi fi ft⁾ 1 cr CO 3 3 fi n- n- H M

Ω n- Hi 0 cr tr n- Ω rt - φ 0 rt X CD rt ft Ω 0 ft ft⁾ 1 3 <τ ^' 3 ϋ 3 ii φ ^f^^*

0 CD ti Hi ft⁾ φ co ft⁾ ft⁾ tr 3 0 tr rt rt 0 Φ 0 X <τ ft⁾ fi Ω tr CD Φ CQ Φ ft⁾ ft 0 3 CD 3 Φ Hi ct ii φ ft⁾ tr ft 0 ct 0 cr ft⁾ 3 ft

Φ rt 3 rt X ft⁾ TJ CD 0 n- ft 3 Φ Ω ft⁾ n- ft⁾ to ft Φ rt . — . CD rt n-

0 tr - Ω φ O ft⁾ TJ li Hi n- 3 O rt 3 O TJ tr 3 n- ti ft⁾ Φ 0 3

3 rt Φ CΩ Ω fi Ω Φ n- 3 CΩ φ Ω 3 TJ tr CQ m ft⁾ ft⁾ tr 3 rt ti ft > ft⁾ tr tr 0 CD n- CQ 3 Φ φ ft⁾ Φ rr 0 TJ ϋ Φ ^ CD 1 CQ rr fi ft⁾ ft⁾

*< φ φ ra Ω 3 0 ft⁾ 0 ra X CD rt 3 s: 0 3 Φ TJ Z Φ ft⁾ tr Φ 0 3 ii φ 0 3 3 rt ft⁾ Φ ft 0 fi rt ft TJ ft⁾ n- ct fi TJ ft⁾ £ 3 3 Ω

3 rt φ Ω U rt 1 φ tr £ 3 n- ra CΩ fi ft Φ Φ Φ rt rt tr n- Φ ft⁾ CΩ n- 3 n- 0

Φ ft⁾ 0 TJ CD ft Φ n- TJ 3 X n- ti rt 3 rt- tr Φ 3 ft⁾ rt 3 Hi n- >ft 0

Φ X ft 3 3 Hi TJ (T rt μ- 3 Φ ro rt tr < ϋ Λ 3 ti ft Φ φ ft rt fi φ CD tr Φ n- 0 rt ft⁾ ft⁾ n- fi fi fi tr n- n- Φ Φ 0 0 3 Φ ft

3 rt Φ 0 Ω n- rt - rt ra ft rt 3 3 Φ 3 n- J rt ι-3 fi Φ n- 3 Φ n- rt • ft⁾ Ω ϋ 3 H- - rt 0 ra rt ft Φ n- Ω ra < CD tr 3 3 Ω CΩ 3

0 μ- 0 Hi tr ti rr μ- tr 3 fi TI 3 0 s; 0 Φ Φ > . CD 3 ft⁾

H 3 Ω s- n- Φ n- 3 ft Φ 3 Φ ft⁾ n- φ Q tr TJ n- Ω £ TJ o 3 tr rt tr 3 ra TJ ft⁾ tr Ω Φ ft Ω < ft⁾ μ- ra fi CQ ft 3 n- φ Ω 0 CQ tr H n- o tr ra ro φ 3 3 n- ft⁾ rr 0 rt CQ Λ ra φ μ- Ω 3 φ 3 n- μ- o 3 1 φ

Ω 0 rt- Ω n- Ω μ- n- ft⁾ n- 3 ft⁾ Ω N tr TJ Ω <! rt ft⁾ rt ft⁾

CQ O Hi ro 3 tr 3 tr 3 CQ Ω cr fi Φ 0 0 φ tr 3 0 rr μ- Λ 0 ti fi φ 3 fi ft⁾ Hi n- φ ft⁾ O Hi rt — 3 CΩ 23 φ rt ft 3 Φ n- Φ

3 3 rt X rt O 0 rt ϋ CD n- 0 TJ ft⁾ tr Φ cr Ω φ Φ ι ^ ft⁾ ra ft⁾ φ Φ tr μ> Φ tr fi Hi tr 0 3 φ ft rt rt 3 Ω CΩ φ ti ft! 0 ft CΩ o

1 Ω Φ o Φ 3 Φ 0 φ tr 0 rt 0 3 3 3 ft 1 oo 3

1 oo ft⁾ 3 φ φ O CΩ X Φ CΩ

1 1 H fi rt CD Φ

1 ft

rated and sent to both the giro bank's computer and the second computer.

Using the information obtained in this way, the giro bank can now carry out the transfer from the pen owner's account, to the account ^• which is indicated on the invoice as the recipient of the invoice sum and which is stored in the giro bank's computer.

Of course, variants are also possible where the user adds graphical information in a corresponding way to that described in the examples above. For example, the user could fill in an amount himself in an information field. This variant can, for example, be used when there are different alternatives on the invoice, such as payment for one or more products. With reference to Fig. 5, a hand-held device that can be used in the system according to the invention will now be described.

The device comprises a casing 11 which is approximately the same shape as a pen. In a short side of the casing there is an opening 12. The short end is intended to be held in contact with or a short distance from the surface from which the position-coding pattern is to be read off.

The casing contains essentially an optics part, an electronic circuitry part and a power supply.

The optics part comprises at least one light- emitting diode 13 for illuminating the surface which is to be imaged and a light-sensitive area sensor 14, for example a CCD or CMOS sensor, for recording a two- dimensional image. The device may also contain an optical system, such as a reflector and/or lens system. The light-emitting diode can be an infrared light-emitting diode and the sensor can be sensitive to infrared light. The power supply for the device is obtained from a battery 15 which is mounted in a separate compartment in the casing. > > to CO H¹ t-¹ in o in o in o in

Hi 3 Hi ft⁾ Hi Ω (T rt ft⁾ rt 3 μ- fi TJ TJ 0 3 0 μ- ft O rt ft⁾ Ω TJ μ- CD TJ TJ rt 3 rt TJ

0 ra 0 Ω Φ ft⁾ 0 tr tr tr 0 rt Φ μ- 0 TJ ft⁾ £ 3 ro 3 tr fi 0 fi 3 Φ fi ti μ- 0 n- ϋ ti μ- fi rt fi ϋ ft⁾ CD ft⁾ rt cr CQ μ- Φ rt- 3 rt- Φ φ Φ 0 0 ft⁾ 3 o o 0 fi O o

3 3 n- μ- ti μ- rt 0 rt n- fi 3 3 ti ro Φ 0 ro ft⁾ fi Ω CQ CΩ Ω Ω 3 φ 3 Ω ft⁾ CQ CD <! 3 n- 3 ii 3 CD ft⁾ φ rt ft⁾ to fi ϋ fi 0 ϋ CΩ ft Φ Φ 0 ro ro 1 ra ro rt tr ft⁾ f-3 CQ Φ Hi Φ tr n- H Φ Ω 3 t-3 <τ ft 3 TJ φ n- CD CD ti CO CD Ω TJ - CD f-3 n- n- 0 rt tr ft ϋ 3 rt tr Φ rt rt rt μ¹ tr n- er O ro μ- Φ Ω ft⁾ 3 CD . ra CQ 0 0 CD tr

0 3 ϋ Φ φ £ ft⁾ n- n- Φ ft 0 ft⁾ 1 -j φ 0 Φ Hi fi 3 fi 0 3 ft⁾ 0 ft⁾ 0 n- ft to 0 n- Φ

3 Hi rt ft n- 0 fi rt 3 n- tr tr ^ 3 ro ft⁾ CQ ft rt- fi H 3 fi 3 μ- μ- ti 3 fi 1 ft rt 3 ro CΩ Hi m TJ rt tr u ft o rt rt ft rt 3 ro rt ft CQ 3 rt CQ Φ rt ft⁾ ft ft⁾ φ r rt ft fi μ- 0 φ Φ CΩ 3 φ rt 3 rr 0 μ- μ- rt CD Ω £ CQ μ- 3 H

0 fi μ- 3 < n- ft⁾ rt CQ ro CO <J 0 CQ Φ Ω 0 <τ 0 ft⁾ Ω rt tr t 3 0 0 3 φ

Φ D ft μ- r £ 3 ti ϋ 3 tr 3 CΩ ft μ- μ- 0 0 3 n- 0 3 ft⁾ 0 n- ro TJ 3 fi ro Ω ft⁾ ft rt Ω tr n- μ- Hi Φ ft⁾ φ ft) ra 0 3 Ω £ ft⁾ Ω tr 3 0 Ω ti 3 Ω ft⁾ ft⁾ ra φ ft⁾ rt

3 ft⁾ Ω Φ Φ <τ CQ fi ft 3 3 <! φ £ CQ φ tr 3 0 rt TJ Ω 3 ft⁾ ft⁾ ft rr 3 rt - 3 fi ft 3 0 tr tr ft⁾ CQ rt Φ ft rt ti n- ft 0 ft> 3 0 ii Ω H¹ ft⁾ Φ CD rt to ra 0 μ- Ω 3 ft! TJ o rt ti TJ 1 tr n- £ ft⁾ Ω ti μ- rt- 3 0 ϋ 0 ra rt n- Φ 0 TJ 3

Hi CQ Φ rt ft⁾ 3 Φ μ- ft⁾ cr ft⁾ ft⁾ rt tr tr μ- ft 3 ro Hi ^ 0 0 CD Φ CΩ Ω fi 3 Φ H μ- fi tr fi CΩ rt rt ft cQ ϋ ft⁾ 3 H rr n- n- CΩ 3 n- fi ft fi 0 fi ft⁾ 3 Ω σi Ω

0 ct £ 0 0 rt rt tr Φ CΩ * 3 3 Ω o rt 3 ft⁾ • rt 0 ft tr 3 TJ 3 r n-

3 -. μ- Φ rt rr rt 3 Φ rt CQ tr tr O ft⁾ 3 tr tr 3 n- Φ tr μ- fi fi tr Hi Hi Ω fi Ω fi tr ro μ- . rt ft TJ Ω tr • Ω Φ fi rt- CQ Φ Φ rr 3 Φ 3 O tr φ Φ μ- O μ- rt ti φ φ 0 3 Φ CQ Φ Φ Φ ct o ft ro ft⁾ 3 ra ft⁾ TJ φ CQ Φ Ω Ω ti ti tr ft⁾ -> ft 3 ft tr td rt £ 3 ti f-3 tr 3 Ω Φ ft Ω rt Φ Ω rt fi ft⁾ H O tr ft⁾ Ω ro ft φ TJ ft⁾ ro rt *<: 0 fi <τ 3 rr Φ TJ 0 fi ft⁾ ft rr o Φ φ O 3 TJ ft⁾ ft⁾ fi ft⁾ H¹ ft 3 μ- CO fi tr rt- μ- TJ ft⁾ CΩ ro fi 0 fi ϋ Ω fi CΩ CQ 0 3 ft CQ ro μ- ft 0 CΩ H μ- 0 ro ft⁾ 3 n- rt 0 n- φ 3 μ- fi rt ro ro ft⁾ CD 0 rt ϋ > CΩ 3 TJ ro μ- : rt- rt ro rt ra < Ω 3 ra 3 μ- μ- 3 fi TJ CD CO ft 0 ft⁾ CQ ra Φ 0 ft⁾ £ ft⁾ CO μ- ro ϋ ft ra ro rt φ Φ (T n- Λ M

< £ ft n- Hi 3 3 ro Φ Φ n- CQ 3 fi n- 3 H <τ ft 0 Ω fi •<; J n- ft⁾ fi ft⁾ ra 1 n- 3 ti CQ rt ft⁾ Ω 3 fi CD 3 0 rt rt ft ft 3 rt 3 π n- Ω er 0 0 3 σi

Ω <J ft⁾ 3 0 ft⁾ CQ ft⁾ TJ ft⁾ ft⁾ tr 0 rt tr n- tr Φ 0 rt φ X Hi 0 μ- TJ ro Φ 3 ra tr φ 3 ti μ- fu TJ 3 TJ Ω n- rt- rt 0 ro rr 3 0 n- ft 0 3 0 CD fi 3 ft⁾

. ra ra 0 3 3 CΩ ft⁾ φ ra ct o ft⁾ 3 ro ft⁾ £ tr ft⁾ TJ 3 ϋ CΩ to cr rt ft μ- ti

3 rt rt 0 Φ ft μ- Ω n- 3 CD μ- tr ft⁾ Hi Φ rt- Φ rt ti 0 tr tr μ- 3 rt

H 0 μ- tr rt n- Hi 3 ra ft) Ω 0 3 rt 3 μ- μ- ro ϋ TJ 0 p⁾ 0 ro fi φ Φ 3 CQ

3 fi CΩ ft⁾ 0 0 CD μ- 3 ft⁾ 3 rt Ω tr Ω Ω TJ ϋ Ω ra ft⁾ fi 3 3 ft⁾ ft⁾ Ω ra m 3 3 rt 0 CQ μ- μ- rt rt ft⁾ n- 0 ft⁾ tr ft⁾ ra 0 rr Φ fi ft 3 m μ- rt- 0 0

TJ 3 n- CD Φ rr fi tr CQ rt • μ- ii μ> fi CΩ fi 3 fi rt 0 0 n- 1 Φ <xj rt r 3 Φ 3 ro 3 ft⁾ 0 ft⁾ ft Φ rt tr ft⁾ 0 O fi fi rt rt ti fi 0 ft Ω ⁱd r n- n- 3 ft⁾ CQ Φ T MJ ti rt 3 rt 1 rt tr 3 ^ Φ Φ μ- tr ^ Ω ft 3 φ 0 O Φ 3 (T CO CQ ϋ rt ti rt 00 £ TJ tr Φ CD n- to 3 ro 0 μ- Ω CΩ Hi CQ o Φ Hi O μ- μ- ft⁾ H ti ft⁾ ft⁾ 3 ft *<: £ ra 0 c TJ ft £ 3 3 0 n- 3 cr n- £ fi to 0 fi CΩ

Ω ra Hi ft⁾ cr n- rt rt μ- 3 rt tr 3 0 0 μ- ft tr TJ ft⁾ 0 n- 3 μ- ft⁾ 3 n- ti Φ

3 0 0 3 ^ rt rr rt ft 0 tr Φ ro rt ft 3 Ω ro μ- 3 rt- ti 3 φ N ⁽-3 ra ft⁾ rr !-^■ 0 3 CD

3 fi CD μ- Φ μ- rt Hi Φ rt X n- ft ft⁾ Ω Ω rt- ro ft ft φ tr μ- CQ rr > Hi rt 0 ft⁾ 3 Ω £ 3 fi 10 n- rt tr rt- O 3 • rr 0 tr ro CΩ n- fi φ ra ro . tr fi ft⁾

M ft φ Φ tr CQ 3 3 tr CΩ ft Φ ro fi Φ n- ft ϋ 3 φ Ω TJ ra ft⁾ rt ro φ

X μ- μ- to CQ Φ 3 Φ fi 3 ft 3 O ro μ- rt ft⁾ CD O fi 3 o m rr CΩ ft⁾ <! Ω μ- Ω φ Ω <! ft n- rt 3 ft ra n- o rt- TJ 0 Φ μ- Hi Hi 3 rr Φ 0 TJ μ- rt 0 3 φ tr 3 ft⁾ 3 ft 3 tr μ- 0 ft) 3 3 ro 0 ti ft Ω ti n- Φ 3 0 CQ tr Hi TJ ti rt 3 CQ μ- ft⁾ Ω ti tr ft⁾ ft⁾ 0 Ω rt ft⁾ 3 ft Φ ti rt 0 Ω TJ ro CD 3 ro μ- Φ μ- O fi ft⁾ φ ti Hi 0 tr Hi ft⁾ CD n- Hi 0 rr 3 fi CQ 0 n- ft⁾ μ- φ t-» rt ti tr rt ft X 3 ro ^ TJ o ro μ- TJ fi Φ 3 μ- 1 Φ 0 μ- CD 0 1 ft 3 ID 1 φ n- Φ CΩ rt ft O φ rt fi CQ fi φ ft⁾ 3 CD rr 1 CQ μ- fi φ 1 μ- < 0 rt ft⁾ 3 tr ft Φ ft⁾ rt rt- Φ ro tr 3 1

1 CO Φ TJ φ 3 φ μ- H 1 ra 0 ro ft ro ft⁾ Φ CD ft 1

rt ft⁾ O <; tr Hi μ-

Φ ra Ω

0 μ- φ

TJ 3 ft Ω Hi Ω fi 0 o ft⁾ rt fi 3

^ TJ 3 ti ft⁾ Ω

£ μ- rt 0 tr CΩ μ- 3

Φ φ 0 3

3 3 3 ft⁾ 3

Ω rt n- ft⁾ ft 0 Ω fi μ- ft⁾ fi CD ft⁾ ct

^ TJ 3 Φ μ- ft

3 ft⁾ £

CQ -<; Hi n- fi rt

0 CO 0 tr

3 o 3 rt ft⁾

Hi ct rt O tr 3 ^ tr fi Φ o -J φ tr ft H n-

0 μ- 3 \->

TJ m ct Φ φ TJ φ fi fi TJ ft⁾ ft⁾ 3 tr rt ^ Φ 0 n- μ- rt 3

0 3 Φ

3 CQ f-3 Hi μ- tr 0

3 Φ fi

Hi

O ft ct fi Φ fi

3 ft⁾ ft⁾ μ- 3 ct Ω CD μ- φ 3

O μ-

3 Ω ra

• ft⁾ ra

3 μ-

0 3

Claims

LO ! O to μ¹ in o in o in o in

μ- 0 Ω rt TJ Hi μ- CQ Ω Ω £ ft⁾ n- rt n- tr rr 0 CO TJ £ Hi tr CD φ tr CD ft⁾

CQ TJ I-¹ tr ft⁾ n- 3 fi O H¹ n- <; 3 tr 3 ft⁾ n- Hi rt ft⁾ tr n- ^ 0 Hi *< Φ

Φ ft⁾ Φ rt φ CΩ ft⁾ fi ft⁾ rt ft⁾ CD Φ Hi CD 0 fi rt n- Φ 3 Hi ϋ 3 ft⁾ fi μ- rt- rt TJ ft μ- tr n- rt 0 3 CQ 3 rt Ω fi 1 Φ rt <i Φ

3 ft⁾ 3 CQ ro ft fi tr μ- 3 H CD fi ft⁾ 1 n- Ω Φ r ft Φ m Ω tr n- rt rt CQ in fi fi 3 μ- 3 to t . ct ft⁾ 3 rt ⁾ 3 ^• Ω <l to rt fi ft⁾ TJ rt φ Ω £ t-¹ ft⁾ n- - • ft⁾ 3 o Ω Ω CQ • tr tr Ω φ ft⁾ 3 O n- • μ- 3 o O ft Φ Φ O •

Ω 0 TJ 3 rt ft⁾ Φ ct TJ rt 3 ft 3 0 TJ 3 μ- Ω rt CD ra fi

Ω 3 n- rr μ- φ Hi φ n- > n- n- n- CQ 3 rt Φ 3 n- tr rt X

0 3 n- £ rt 0 μ- 3 Ω 0 0 0 Λ 3 rr fi rt CQ Hi ft⁾ φ n- 1

3 n- 3 Ω tr tr 3 μ- φ fi 3 ft⁾ rt 3 Hi 3 3 3 CQ ft⁾ 3 μ- fu ft⁾ tr n- t TJ 3 tr 3

3 CΩ £ φ ft⁾ μ- Φ 3 Ω rt φ fi 0 Φ ro 3 φ 3 <τ rt Φ 0 Ω ft p⁾ φ rt tr rt Ω tr Hi rt tr rt fi rt CQ rt n- TJ rt n- Hi ct 0 n- ^•ra (T ft⁾ μ- tr tr TJ ^ 0 ti Φ 3" ^ ft⁾ 0 n- tr CQ n- ft⁾ n- tr rt Ω 0 TJ Hi n- tr Hi Ω Φ tr

Hi Ω o μ- fi fi 0 fi 0 μ- <: 0 ft rt 3 0 rr 0 3 fi 3 Φ ft⁾ ft 0

0 TJ tr ft 3 μ- 0 TJ 3 3 ft 3 TJ 3 n- ft ft⁾ ro rt to ft Φ ft 0 ft⁾ Hi CQ rt ft ti ft⁾ Hi 3 ft ft⁾ ft⁾ μ- Ω CQ ft⁾ ft⁾ 3 CQ 3 Φ ct φ Hi ft 0 0 n- φ ra rt ft⁾ 0 Hi 3 CΩ rt Ω 0 ft⁾ fi X CQ ft⁾ CΩ rt fi fi ft⁾ CD ra n- 3 TJ fi TJ <J ft •<; Hi ct tr Ω fi 0 Ω m μ- ft⁾ 3 Ω 0 rt Φ Ω 0 n- 3 3 Ω •<; φ Ω 0 3 Φ n- CΩ o tr φ Φ Ω 3 fi <τ μ- 0 TJ Ω 3 ^ ft⁾ Ω Ω rt Ω Ω CD Ω ct CD ft⁾ fi 3 0 ct fi

Φ 3 0 ft⁾ 3 3 3 fi 0 rt rt 3 0 n- X cr rt 0 rt- 0 ft μ- rt ft⁾ CQ 3 φ rt CD fi rt ft⁾ T CQ • ; n- ϋ ct tr ii ft^{) >}< n- fi ro 0 tr rt n- rt 3 ft⁾

TJ ~ ^ ft μ- rt fi rt CΩ ft 0 tr Φ n- ft rt- £ 0 ft 3 fi μ- ^ n- 0 n- ft⁾ ft⁾

Φ CD μ- 0 n- 0 rt tr tr n- n- Hi ft⁾ 3 μ- ro n- 3 3 μ- ft CΩ 0 3 0 3 TJ ϋ rt rt 3 3 0 <; tr ft⁾ ^ 3 3 rt TJ to 3 ft rt φ 3 μ- 3 3 3 TJ £ φ

CQ rr φ CQ 3 μ- Φ rt CQ CQ rt Φ rt CQ • tr ft⁾ Ω CQ 3 TJ Φ 1 TJ n- fi • tr fi o Φ 3 ft 3 rr 3 ϋ H 3 O ft⁾ fi ft> Ω fi n- 3 O n- CΩ π

3 rt Hi Φ ft μ- φ rt rt Φ Φ ra 3 rt £ CD 3 rt rt- 0 3 0 Φ CΩ CD ft Ω 0 tr

TJ μ- 0 n- ft Φ ra ft⁾ tr 0 Φ 0 Ω 0 tr TJ 0 ro CD ft < rr 3 tr 3 > to ft⁾ Φ ra φ < 3 φ 0 ft 3 ct n- 0 ϋ CD μ- n- n- rt fi Ω 00

3 fi ft⁾ £ μ- rt CD ft⁾ TJ CD 1 n- Ω Ω Hi n- Ω ft 0 3 0 0 3 ct o ct ft ra ft⁾ 3 ft μ- Ω 0 CΩ 3 Φ CΩ 0 rr 10 H" £ φ Hi iQ 3 Ω _^ TJ 0 CD

0 •<! rt Φ 0 rt- • : fi rr TJ 3 ft⁾ ft⁾ φ ft⁾ rr ft CD tr rr φ rt 3 TJ μ- tr tr Hi ro ft! 0 φ μ- rt to μ- n- ft⁾ TJ Φ n- fi μ- rr 1 ft⁾ 0 CD ft⁾ Φ TJ 0 rt Ω Ω 3 rr tr 3 Ω £ ft⁾ *< 0 Ω ft⁾ 3

Φ ra 3 ra Ω <T 3 n- 3 n- O ro ft⁾ fi rr μ- rr rr Ω 3 rt μ-

TJ Φ μ- ft⁾ fi ft⁾ tr o Φ 0 CD Hl 3 μ> 3 φ μ> rt u rt CD ft⁾ rr n- rt n- φ φ 3 n- O rt Φ Hi 3 Φ n- TJ TJ ft ft⁾ - fi rr 3 Φ Ct fi rt 0 n-

3 Ω 3 0 (T ft CΩ rt 0 Ω fi 0 Φ 1 ft ro ft fi 0 fi 0 p⁾ 3 ft⁾ ra n- rt Hi Φ CD ft⁾ tr Ω Hi μ- n- fi H tr n- μ- TJ ft⁾ 1 3 fi n- rt ct Hi 3 TJ Ω ft⁾ fi rt n- ra CD Φ 3 3 fi rr Φ Φ rt fi Ω Φ fi n- ra rt ft 0 ft⁾ tr 3 φ rt 3 φ to 0 CQ ro TJ Φ n- ft ft tr ft⁾ 0

3 Ω ^ tr φ CD 3 Φ ft ft⁾ tr n- Hi ω - 3 ft £ CD 0 3 Φ 3 ft⁾

Ω CQ Φ ft μ- 1 rt Φ 3 0 1 0 tr φ CD ft μ- 0 Ω Ω 3

<τ n- rt rt μ- r n- ti CQ n- CD ft Hi μ- 3 μ- ft⁾ 3 3 CD Φ n- 3 φ TJ rr μ- 3 ct Φ 3 TJ Ω 3 n- 3 TJ φ Hi Ω rt rt ft 3 rt X rt fi 0

0 Hi 3 fi 0 0 Hi 0 -> CQ fi 0 ft⁾ <! φ < tr n- Φ rt CD 3 TJ

3 0 Φ 3 0 ft Φ 3 rt μ- £ Ω μ- rr CΩ 0 <! 0 tr 3 rt Φ CΩ Φ fi Ω fi 1 fi CD ft⁾ Ω 3 n- 3 tr n- Ω tr ct ft⁾ 3 μ- TJ Φ CO φ fi n- 3 rt φ Φ Ω 3 ft⁾ ft 3 Φ Φ 0 CQ n- Hi Φ Φ tr n- 1 Ω Φ n- 3 ti CQ ft⁾ ra ft⁾ tr ft Ω O ft⁾ μ- Φ ft ft Ω 3 Ω n- Φ ft Ω Φ fi CD 3 n- 0 ct rt Φ n- Φ ft rt ft <! n- <τ ft⁾ tr Ω (T TJ 0 •> ft⁾ < CQ rt 0 n- ft n- 3 n- μ- μ- μ- fi 3 n- 3 tr 0 ra n- ft rt m 0 ISl ft 0

3 0 CQ <! 3 0 Ω Φ CQ 0 ft⁾ rt- 3 n- n- rt TJ ra 3

3 φ cQ 3 Φ 1 3 rt n- ro 1 3 0 φ Φ rt φ

1 TJ CQ 3 3 fi tr 0 n-

1 Φ ft fi 3

LO ω CO CO μ> μ¹ cπ o in o in o in μ- rt rt n- CO rt o CD (T TJ μ- 0 0 0 TJ TJ TJ 0 3 Ω <! rt £ TJ 0 fi ft⁾ ft⁾ Hi μ-

3 tr 0 3 r tr 0 rt- μ- ii 3 Hi Hi 3 Φ 0 fi Hi Φ ft⁾ n- 0 tr 0 Hi ro 3 ii 3

Hi Φ Q. 0 Φ 3 ro 0 μ- rt fi CD n- ct fi 0 0 CD Ω TJ 0 CD

O rt fi TJ TJ 3 CD fi rt n- to n- co 3 £ fi 3 tr n- n- ro fi o 3 rt ϋ tr rr rt Φ TJ ϋ μ- ro tr tf rt 0 tr ro ft⁾ 0 ^ ra ro 3 rt ft μ- 0 TJ fi

3 ft! Φ tr μ> CΩ ft⁾ μ- 0 μ> ft⁾ 3 ID D ro φ oo tr 3 n- CΩ X ^1 fi n- CΩ n- Φ <! ft ro σi rt 3 ft) 3 φ μ¹ fi CΩ Hi o < CQ • TJ 3 • Φ 1 0 μ- X 3 ^ Ω ro 0 3 μ- 3 fi • rr Ω rt ft TJ rt rt φ • ft⁾ o Ω rt CD 3 n- 3 CQ ft⁾ ra 3 rt 3 Ω ft⁾ Φ rt μ- ft⁾ CΩ tr ^ CΩ 3 μ- rt - 3 0 μ- O TJ ft CQ tr CQ fi μ- CQ rt rt n-

0 tr fi rt- Φ ft⁾ > tr ra 0 Hi TJ φ Ω ro ft⁾ O rt fi rt Ω Hi _^ n- ø⁾ 0

3 φ rt ro ft⁾ Ω X ft⁾ φ 3 ro fi ^■^ 3 Φ Ω 0 3 TJ 3 ra 3 0 μ- tr 0 ^ ft⁾ 0 3 Ω 3

^•<: TJ 3 TJ 3 fi μ- 3 tr ro ft μ- φ ti H- ft rr 0 φ Φ rt ϋ ro ro - ft μ- 3 φ Ω μ ft φ φ ft φ 3 φ ra (T ft) n- 3 rt ft) Hi n- n- to rt ft Φ ft n- 3 TJ Ω rt 0 ct

CΩ ft) 0 rt fi ft⁾ CQ rt Φ rt- tr 3 3 CQ tr rt n- 3 Hi to tr 0 ft ft 3 CQ O Ω tr 3 0 ft Hi rr ra <τ rt tr ro 0 ft⁾ o n- Ω CQ ^ μ- 0 ra Hi 0 ro CQ CΩ tr O o 3 ft) Φ ft 0 0 O μ- rt 0 rt TJ ft ft⁾ rt- to ft O n- er ft ^■ ; μ- 3 <! μ- 3 ft rt (T ra < Φ rt ft 3 3 tr ft 0 ft ro ft! 3 n- TJ 3 H" CD ct 3 rt μ- TJ t⁾ cr rt ft⁾ Ω . tr

CΩ μ- <! ti ft⁾ CQ ro 0 f ft IΩ μ- ft⁾ 3 ft⁾ CQ φ ft⁾ rt tr Ω ft^{) >}< n- r n- φ o r ft rt Hi Ω fi ft Ω Hi rt Ω φ Φ o ct 0 fi o

Ω n- ft⁾ ft⁾ a rt 3 r fi 3

Ω φ Ω 3 Ω TJ CD ft⁾ TJ^' Ω tr Ω ro rt Ω 0 rt- rt Ω 3 tr CO rt- 3 3 φ μ- φ CD Ω φ φ φ 3 0 CΩ 0 TJ 0 fi ro cr tr 0 0 Φ μ- ct ro Φ 1 ft) 3

3 ro Ω n- ft⁾ Hi ft⁾ ft⁾ 3 0 Ω Ω fi 0 ft⁾ fi CΩ ft) fi 3 fi ^ Φ fi TJ 3 0 fi ft⁾ Ω Ω 3 Hi rt- 3 n- n- fi n- 0 0 to fi TJ X ft ft⁾ fi ft ft⁾ 3 ft Φ CD CQ 3 3 0 CQ tr φ ro ft ft rt ft Hi 3 TJ o ft ft⁾ μ- n- n- rt μ- ct 3 Ω n- fi X ct CΩ ft rt- ft) Ω ft φ (T μ- n- ft Φ 3 μ- fi 3 3 3 Hi ^ 3 n- ro ft⁾ 3 ft) CD TJ tr n- CQ 3 rt

• £ 3 n- 3 Ω fi 3 rt Q cQ n- CQ 0 ft) ft⁾ fi CQ rt rt- ro ro ft) o 3 ro O ft μ- rt 3 CQ Ω ft⁾ CD CQ X rt fi Ω 3 3 fi μ- ro fi 3 Hi CQ 0 Ct rt- n- CQ n- O rt TJ rt rt tr ra 0 rt TJ ra r 0 r rt rt ^< t 3 ra ro fi ft rr tr _κ tr rt t 3 3 μ- Φ tr 0 ro 3 O n- ft⁾. μ- 0 3 o Hi n- Ω TJ n- ra Φ ω to

*< rt O Hi TJ O o 0 ro TJ 3 fi o 3 3 Hi 3 0 ft) I—¹ ct w

£ 0 0 3 3 n- Ω 3 Ω fi Ω rt Hi CQ Ω cr ft⁾ ro CD 0 rt N 0 ft tr £ Ω ti ct Hi TJ ro 0 μ- ft^{) >} -> ^• ; 3 CΩ Ω rr fi (T fi ft⁾ μ- tr rt 3 Φ Ω n- h-¹ ro ft⁾ rt M 10 ft⁾ to Ω 0 ft⁾ ft TJ rt fi ft ro

Ω n- ro ft tr ft⁾ ft⁾ ti O Ω ft⁾ ti μ- £ TJ Φ μ- to ct 0 3 μ- Ω ro 3 μ- fi CD Φ TJ rr Ω ro μ- rt ft μ- ra 3 O 3 CO 3 O tr 0 rt 3 0 0 Ω rt Ω 3 3 ft ro <! ft) tr 3 μ- μ- ro n- 3 0 ϋ rt Ω ft⁾ fi 3 Hi μ- tr rt ft) ti μ- ^ rt to 0 3 3 3 X Φ to 1 n- ct ft 0 σi 3 Hi ft⁾ n- rt- Hi <! Ω 3 tr 3 ro M 3 ft⁾ Hi (O fi φ - ft) n- Hi - 3 3 μ- rt 0 CD fi tr n- φ Φ φ 3 Ω o . rt 3 O ^ CD 0 Hi 3 rt 3 3 3 ft) Ω 3 CO O ^• Ω 3 n- 0 tr ft ti TJ fi 0 ft⁾ ft n- n- ro ft⁾ rt n- μ- X rt 3 ro Hi rt

TJ ^■X) 3 φ 3 μ- ro fi 3 μ- 3 0 ro rt- tr 3 Ω n- μ- tr Hi Ω rt CD 0 φ 3 ft Hi CO ft) 3 Ω oo ft 3 3 ft ro Φ ft⁾ 3 3 ro fi 0 rt tr H n- fi Φ 3 3 ro rt μ- ^•• rt CQ £ CD CD £ CT CQ Hi 0 ft tr ro n- CΩ

CD H Ω fi Φ 3 μ- £ Hi tr 0 tr £ 0 tr n- 0 0 3 ro ro 3 μ-

0 ^•• 0 (T ct ft 0 tr μ- Hi ro Hi ft) n- n- rt Ω TJ n- 0 TJ fi TJ μ- ft ra ft 3 rt

3 3 tr £ 3 μ- Ω 3 rr Ω rt 0 o Φ Ω 3 0 3 ro ft⁾ TJ rt- n- μ- 0 μ- TJ Φ o 3 Ω fi TJ fi tr tr ft fi tr CΩ ft⁾ fi tr fi ro Ω rt

(Ω ft 3 fi ti CQ ft⁾ tr μ- rt ft) Φ 3 ro ft⁾ £ ra ct ft) TJ ^ 0 TJ ft⁾ n- tr

TJ φ rt- X < 3 tr fi Ω Φ rt Ω ra ft ct ct n- n- μ- rt Φ ft CΩ rt- ft⁾ Φ

Φ 3 ro Ω μ- ft⁾ t Hi ro (T Φ ft⁾ tr ft⁾ ro n- tr rt cr 0 n- fi ct 3 ro rt

Ω rt fi 0 £ rt μ- tr 0 fi ^ n- to φ fi er 0 Φ tr 3 0 CD tr Ω 0 ft μ- n- 3 n- tr Φ fi <! rt ϋ rt ^ 3 ro 3 0 ro rt Hi 3

Hi ft⁾

Hi ft) TJ μ- rt ft⁾ 3 Ω n- ra ^ tr ra ft⁾ TJ 3 _^ o CQ n- ft n- 3 fi Ω 0 er. ft⁾ o 3 CΩ rt- n- ro rt Ω rt rt ti n- 3 Φ

Ω φ ft μ- tr 3 CQ 0 ro 3 tr 0 φ tr ro CD ra m φ 3 TJ ro 3 TJ ro Φ 1

to ! CO O μ¹ μ> in O in o in o in

ft⁾

TJ ft⁾

^■ !

3 Φ

3 rt n- ra rt

0 tr φ

3 ft⁾ ft φ

Hi

H

0

3 rt rr Φ ft⁾

Ω

Ω

0

3

3 ct

ω ω CO to H H in o in o in o in rt ct rt 0 CQ 0 TJ 0 ft⁾ TJ ra rt n- Ct ft⁾ rt £ CΩ Ω Ω ft 3 0 rt 0 Ω Hi φ Ω Ω TJ

0 tr n- TJ 0 Hi 0 ti 3 ft⁾ TJ tr 3 n- tr n- Φ rt 0 ro ra 3 n- 3 ro 0 ft 0 ft⁾ fi ft⁾ 0 ro 0 CO ft rr 0 Φ Hi 0 TJ φ rt ft⁾ 0 tr ft <i n- 0 ro CO fi P t 0

Ω ct 3 fi ft rt μ- n- ft⁾ rt- 3 0 3 ft⁾ tr CO H ro n- 3 ft⁾ 3 to μ- Ω fi CQ ft⁾ ft⁾ to tr rt 3 ft ro ra ft fi fi ft rt Φ ft⁾ CΩ Ω CQ 0 μ- fi 3 Φ ^■ ; fi fi ϋ Ω rt O ro n- ft⁾ ft CO fi ro Φ 3 CQ ct Φ Φ ra H ro TJ n- O Hi 3 φ Hi fi to ft⁾ CO ϋ φ O n- 0 ι4^ 0 rt- ti to 3 <! ft⁾ rt *< <! ft⁾ 0 Ω CD 0 ti 3 CO CQ Ω 0 3 o 3 o

*< TJ ft 0 fi • TJ 3 ro φ rt n- ct 0 n- Ω 3 ft⁾ ft⁾ 0 3 0 • Ω 0 fi μ- • 3 • fi n- 3 ft⁾ ra μ- 0 Ω n- fi μ- Ω tr Φ 0 tr Φ ft ft⁾ 3 fi 3 3 rt Ω

0 φ 3 CO ϋ Ω ft⁾ ra en 3 φ 0 Φ 3 Φ 3 Ω ti X 3 > ft⁾ 3 ft ft⁾ CQ 0

3 CΩ CQ Hi ro rt 0 ti ^ <τ 3 ft - n- μ- 3 ft tr Ω 3 μ- μ- n- ct ft⁾ 3 rt Φ n- fi TJ • : ft ro ft ra rt tr n- rt ft rt n- rt- μ- fi ft⁾ rt ro CΩ 3 rt 3 μ- CQ tr TJ 3

3 TJ ro <! fi n- ft⁾ ft⁾ rt- tr φ ft cr n- tr CΩ φ Φ KQ 3 ro 3 - rt ^ ra CQ 0 O fu 3 ti φ ft⁾ rt ft⁾ H" n- O tr 3 CD rt ro ro φ φ 3 Φ O 3 3 3 ro ft⁾ ft⁾ ft £ CΩ Hi 3 0 3 φ μ- 3

3 rt ft Ω ft ro CQ - ft⁾ 3 ft 3 n- rt Φ rt- ft £ 0 rt- σi 0 ft⁾ ft ft rt CΩ 0 ft⁾ Ct ro 3 n- tr 0 Φ ct 3 rt 3 rt n- 0 fi ro n- rr tr fi ro fi 0 CD tr n- ti

0 3 φ o CΩ Ω 3 TJ rt ft⁾ ft⁾ TJ < n- CQ tr Φ tr rt Hi n- n- CΩ 3 Φ μ- X 3 TJ 3 tr 0 3 ^■•<:

TJ fi 3 _^ rt CQ ft⁾ tr CΩ Ω ro μ- rt φ rt ft⁾ ^ ft • CQ μ-¹ Ω Ω 0 0 Φ ft CQ ro n- 3 rt ro φ Ω ti Ω

^ fi £ fT TJ φ N ft tr Ω Hi • ft⁾ ra ft⁾ ti 3 ti 3 ct Ω rt rt - 0 ft⁾ φ φ ft 0 Φ 3 μ- 0 0 0 ti n- ft fu n- φ ft⁾ CΩ rr tr Ω 0 rr ro Ω ϋ rr rt φ fi rt Hi ϋ rt ro 3 Hi ft 0 3 fi ϋ rt TJ m Ω 3 ft rt rt tr ro ro ti 0 £ ft μ- ti £ fi <! X tr 0 CD n- Hi φ TJ Ω X n- tr φ ft Ω ra n- μ- fi ft⁾ tr TJ 3 0 tr μ- 0 φ tr n- n- Φ fi 0 rt ft ft⁾ < φ ro 3 n- 0 X fi Φ 0 (T 3

0 3 rt TJ ti 0 fi • μ- 3 3 ft⁾ n- φ Ω 3 ^■ 3 ^>< 3 ft⁾ μ- fi ti ft⁾ 3 3 CΩ < <! ti fi 3

3 Ω fi ft⁾ n- £ ft Ω CQ ft Ω < Φ CΩ o rt Ω ft⁾ 3 X CQ μ- μ- μ- ft 3 rt Ω 0 CΩ CD t μ- μ- Ω Ω Ω Ω fi 3 n- tr Hi n- tr ft⁾ μ- TJ tr CΩ Hi er 0 TJ φ r n- Ω 0

Ω n- 0 ft n- ro rt 3 rt μ- 3 tr ft 3 Φ Φ TJ 0 ^< TJ 0 n- 3 3 0 0 ft⁾ Φ Φ 3 rt 3

0 0 ft 3 ft⁾ 3 fi 0 ft⁾ Hi 0 ro CQ n- ft⁾ CQ fi φ li ro ra 0 0 CQ CQ 3 ft μ-¹ CD CQ n-

3 3 Φ Ω CQ fi rt- 0 CD φ rt ft⁾ TJ Ω ft⁾ fi n- Hi 3 rt n- Hi 0

Ω ra rt Ω o ro ro fi Ω ft 0 ft⁾ rt rt Φ μ- Φ ft⁾ rt CQ TJ 3 TJ μ- 0 ct 3 tr H !^

Φ rt ft⁾ Hi CD CD Hi CD tr t tr n- ti Hi ft⁾ ft ct n- ft⁾ n- 0 O ft⁾ CQ fi 3 ti 0 ra μ- ϋ 0 ft⁾ μ- rt- 3 φ ft⁾ o Hi Φ ^> ft⁾ Φ 0 ra μ- Ω ro μ- 0 CD 0 lΩ 0 ft Ω

3 CD rt ft⁾ 0 ft⁾ μ- 3 3 ra 3 0 Ω tr < 0 3 TJ ft CΩ 3 TJ ft μ- μ- ft⁾ rt tr μ- ft⁾ TJ ro n- rr 3 Hi Ω 3 rt rt ct φ TJ 3 n- 3 n- ra μ- ro ft⁾ 3 Ω 3 3 0

3 TJ 3 ro tr rt rr tr - φ Ω μ- 0 Ω Ω 3 3 tr rt (T Ω ft⁾ μ- • : μ-

CQ 3 3 fi fi ft ft⁾ £ CO tr Φ rt Φ fi ft⁾ £ 3 Hi ro Hi 0 fi rt- 0 H¹ tr rr rt rr rt Ω ra

Φ fi 0 n- μ- Ω ft tr 0 to ro 0 rt CΩ 3 tr Hi μ- ft ft⁾ ro fi ro 0 Φ •_^ φ n- 0 ft⁾ to ct ft⁾ <! Ω 0 ft μ- Hi - TJ TJ tr 0 0 0 rt ft ro n- 3 ft ti ft ft⁾ 3 3 CD ft⁾ £ n- N ft⁾ 0 fi Ω TJ 0 rt ft⁾ Φ 3 er fi tr ft⁾ μ- ft CD ft⁾ CΩ rt μ- O μ- ft rr fi rr 3 3 Ω rt φ ro ft⁾ Hi fi CD rr fi Φ n- 3 Φ rt ft CQ rt φ ro rt ft⁾ O tr n- φ o ft fi rt ro ro μ- ft CD 3 o n- φ Ct TJ CΩ CΩ ft⁾ ft⁾ . ^ ft H Ω ft⁾ 3 ^ 3 0 fi

X ^ ft 0 μ- CD ft⁾ TJ fi ft rt ^><: Φ TJ Ω rr ft tr 0 TJ Ω 3 TJ CQ Hi ft⁾ φ

CQ ft 3 3 ϋ rt 3 n- TJ fi Φ &⁾ rt n- Φ ft⁾ 3 ft⁾ 0 rt μ- ro 0 ft fi 3 ft

O er 0 £ ft⁾ n- ro 3 tr Ω 0 ft⁾ tr CO Ω fi tr 0 < m rt Hi 0 Ω ft⁾ fi μ- φ ft⁾ Ω Ω

O ft⁾ Hi n- Ω rt- 3 ϋ φ rt 3 ti ^< 0 n- fi Φ 3 n- ro rt rt- ro CΩ ft ft⁾ CΩ ft⁾ 3 0 ft⁾ ft CD rt n- 0 ro Ω ft⁾ fi • rt 3 Hi n- Ω rr ro tr tr m rt n- μ- 3 ft⁾ 3 ra Φ Ω tr 3 3 rt 0 Ω ^> 3 n- φ 0 φ £ ro fi ft⁾ Φ 3 ra 3 CD 0 μ- TJ Ω ft O Ω ft⁾ tr ft μ- Ω O Φ CΩ Ω ft £ ft⁾ CD tr 3 3 μ- o CQ n- CQ TJ 3 3 O o 0 ft⁾ rt ro fi ro ro (T 0 ft n- fu TJ 3 ra n- TJ ft n- 3 3 CQ 0 Φ CD rt fi CD fi tr fi ro tf ^ ^■ n- 3 3 φ n- 0 Φ CΩ ft⁾ Ω ti 3 ft ro rt 3 ft⁾ Hi fi Φ TJ

^ ft TJ ft⁾ 3 ft⁾ 3 TJ 3 ra Ω 3 3 fi 0 3 tr 0 £ tr n- μ- 0 ft⁾ ft⁾ CTi fi 3

CO CΩ n- 0 rt n- • ro tr 0 fi CQ fi n- Hi rt Ω ^' ft ft tr Φ rt Ω 0 H ra TJ rt rt φ rt 3 CD 3 rt ^ Hi μ- Φ 0 Hi 0 0 n- 3 n- n- ft⁾ TJ ft⁾ φ fi n- rt Φ ti φ ft⁾ n- ft⁾ CQ £ ra Hi μ- fi tr Hi ft⁾ ft⁾ Ω Ω ft ft> rt- ro 3 TJ 3 μ- O ID O fi

3 ct 3 O rt Ω μ- Ω 3 >< rt rt rt tr rt- ro fi X fi CD 3 3 Φ fi tr 0 3 ft⁾ φ ro ft ft⁾ 0 0 ^• rt

CD X ro CQ 1 ft ft fi I

vices using person-specific information which was previously stored in the system and which is associated with a unique identity of a reading device used to read off the position-coding pattern by the person who wants to carry out the operation.