DE10019679A1 - Pen and method for clearly identifying a user for a specific application - Google Patents

Abstract

The aim of the invention is to provide a device which enables to clearly identify a user for a security-relevant application, is easy to use and is provided with a high level of security, especially for e-commerce applications. According to the invention, a pen is provided with detection means for up to three biometrical and one mathematical identification characteristics of a user. Said characteristics can be stored in the pen and can be transmitted to a master terminal by means of a radio interface. In an alternative embodiment, the detected information can be stored and read out according to desired security steps.

Description

The invention relates to a pin with a pin housing, in a mine has been added, and a procedure for unambiguously gene identification of a user for a specific application tion.

The market for the goods "promise to pay" is still today fractionated into individual areas. Many customers have diverse Credit cards, customer cards, access cards and other chip or SIM cards and often lose track.

Most systems are both proprietary and wired or PIN-bound. The cards are inserted upside down, swallowed, bent, lost and can be misused.

The market increasingly desires a multi-level multifunction system. The customer accepts fewer and fewer new chip cards; a certain degree of saturation has already occurred. It is increasingly difficult to establish new services.

Other services can only be done together with an association enforce handling. So far there is no sy stem that both this claim and the result of it resulting additional security requirements could.

The customer wants convergent services and a device  with which the access rights for different security relevant applications both in electronic and can also be checked in the non-electronic area and with which is a reliable, clear identification of the Be is realizable by the user.

It is an object of the present invention to provide a simple using device and a method for unique Identification of a user for security-related Ap to provide complications.

According to the invention this object is achieved in that the Pen is provided with a font-specific signal the acquisition means for dynamic acquisition of the writing guidance of a user, electronics for evaluating the signal generated by the detection means, a memory, in which user-specific information can be stored, Ener Power supplies for the operation of the pen and one Radio interface for sending and / or receiving data. The The inventive method is characterized by the following Process steps from: Entering the records of a User, saving and evaluating the font history, Ver same of the writing with an identification register (ID), transmission of the signature to a receiving station (Master terminal) and transfer of the acti fourth application.

The pen according to the invention is in the following keyword referred to as ESP (Electronic signature pen). The ESP can as a commercial writing instrument, such as. B. as a ball cry Be trained, mechanical pencil or the like, with the the identification of the user and all related conceivable applications are possible.

This can be done at the ATM via the inte free EC card as well as payment by integrated Credit card (e.g. EUROCARD, American Express, VISA etc.) the computer cash register, the gas station or the like. Finally  provides the ESP with an international e-commerce solution easy and quick identification and / or payment by Internet ready.

The structuring of tiered powers of attorney, e.g. B. of company signatures men, access authorization for PC's, networks, internet, door time records, access to the mobile network, customer cards and the same.

For all of the above applications are not individual (Chip) cards required. The different applications can be in predefined channel grids provided on the ESP be read in; these channel grids can also be timed be licensed for a limited time.

So z. B. an ESP, issued for Mr. Mustermann, fol The following entries contain:

Channel 1

House bank: Deutsche Bank, Cologne
Account access. No. 0815-4711
Access code: AB86078etzHz7
ID level: 2 (signature)

Channel 2

EC card No. 99846 23456 Kln
Access code: 67BGHzioIp-100X
Cash withdrawal: up to DM

1,000

/ d
Expiary Date: 12.31.2000
ID level: 2 (signature)

Channel 3

VISA Card
- not used -

Channel 4

EUROCARD
Access code: NNMGDff564877
Limit: EUR

10,000

, -
accumulated consumption / period: EUR: 3200, -

Channel 4

AMEX
- not used -

Channel A

FORD AG
Network access: Mustermann
Access code: 876zaaclkr54
ID level: 1 (device ID)
Power of attorney: up to DM

10,000

Access code: zzzgdttzr56
ID level: 2 (signature)
Access authorization / time account:
Access code: Abgghzst
ID level: 1 (device ID)

Channels

E-commerce
Payment guarantee: Deutsche Bank, Cologne
Access code: wwerlkz675-ooi
ID level

2

: to DM

1,000

, - transaction volume
ID level

3rd

: about DM

1,000

, - transaction volume
Limited to DM

5,000

,-/Month

The storage capacity determines the number of entries.

The invention provides a security solution for the Internet, especially e-commerce. Starting from the core question "How a participant clearly identifies himself ", is the individual dual signature worldwide as legally secure identification accepted. If you connect this signature process (none Signature is identical to one previously made) a fixed identification feature, such as. B. an ID, and possibly with fingerprints of the index finger and thumb, see above can have a very high security standard over these features be created. The Elek provided in the writing instrument tronik links the signature with the assigned ID and any other features such as fingerprints. The elec tronik transmits these features via its radio interface a compatible terminal. The received from the terminal Information can be created or created with one located there  Document can be linked. The invention provides one for general economic and legal transactions simple and practical solution that also includes scalable security levels having.

When entering the writing it must be taken into account that the fonts fluctuate within tolerance ranges. The ESP takes these fluctuation ranges into account. In addition, a sub font in a specific, specific for the respective user specific time. The signature service takes place not in this period, which is the case, for example, with writing would be the case, the ESP blocks access. As a safety-related further development can be provided be that the ESP deletes the channel grid in the event of misuse and send out an abuse alert.

The radio interface is preferably a blue Tooth application realized; a worldwide standardized and miniaturized, soon to be widely used open radio interface for numerous applications. It replaces cables connections for telephones, printers, PCs, laptops, cameras, Speakers, valves and other duct connections.

There are always two prerequisites for any type of valuable transaction,

• a) - the identification of the actor together with
• b) - Documentation of the action.

The application of the proposed solution is very simple and safe at the same time. The identification of the agent becomes together with the documentation of the action through simple Writing the name with the writing instrument according to the invention, that does not look a bit more complex on the outside differs from conventional writing instrument.  

Typically, the ESP ballpoint pen consists of the following components:

• 1. Radio interface (blue tooth, preferably in the head, upper half of the clip)
• 2. Batteries (e.g. button cells)
• 3. Electronics with ID and memory
• 4. Sensors (recognition of the signature and possibly the Fingerprint)
• 5. Switching and signaling elements, special writing leads
• 6. Software (operating system, security levels for applications ions)

Radio interface

The ESP can be used as a rotatable cap or as a rotatable holder Have clip-shaped switching element with which the whole System, including the blue tooth radio interface, is activated becomes. This interface is a standardized signal connection, which will soon be used in numerous signal transmitting Devices is used. Blue-Tooth is an open worldwide Standard by companies like Nokia, Toshiba, Ericsson, IBM Hewlett Packard et al. v. a. is already fully developed and as inexpensive chip solution for devices such as telephones, PCs, cameras, Printers, watches, LAN's and. s. w. used for signal transmission becomes. For the individual devices, this blue tooth radio interface either as a slave (mostly passive) or as Master (predominantly actively controlling) can be used. The Master setting is mainly used for terminals such as cash registers, PCs and s. w. chosen a variety of different Sla ves operate. The slave setting is predominantly chosen for devices that communicate with different masters should. The chips are in bulk for about US $ 5-7 available and are suitable for their installation in an ESP. Your power requirement is very low and the bandwidth and the transmission range is sufficient to get one Exchange of signals within a range of up to 30 m to enable. Battery operation with a relatively long load driving times are possible.  

The approval of this interface is a type approval granted. The frequency range is preferably 2.4 GHz (ISM band).

battery

For example, 3 button cells are included for the power supply 1.5 V each sufficient. The space requirement for the batteries is like this to set up that these are easily interchangeable in the ESP are ordered.

Electronics with ID and memory

The electronics essentially have the following tasks:

• 1. a.) Saving and recognizing the 3-dimensional course of the signature
• 2. b.) Validation of the signature with approval / rejection
• 3. c.) Transfer the signature to the master terminal
• 4. d.) Transfer the ID to the master terminal
• 5. e.) Read out and transmit the ESP application activated by the master terminal (e.g. in channel 3 : EUROCARD is stored as a credit card with specific security applications)
• 6. f.) Recognition / comparison of the fingerprints: Freiga be / rejection
• 7. g.) Transmitting and reading in a transaction code (TAK)
• 8. h.) Reading and saving of documents from the master terminal
• 9. i.) Output of the memory contents via a home / service -Terminal

The electronics with memory consists of hardware and software. The hardware is miniaturized so far (thick film technology), that they z. B. below the button cell batteries and above the writing lead in which ESP can be placed.  

The ID of the ESP is user-specific and can, for example, be burned into an E ² promo in such a way that it cannot be changed using software.

The electronics can link a document activated on a master terminal for release by the ESP holder with the relevant data and security algorithms depending on the depth of requirements, e.g. B. with increasing safety requirements:

• 1. a.) ID
• 2. b.) Signature
• 3. c.) Channel information of the controlled license channel
• 4. d.) Fingerprints and / or thumbprints
• 5. e.) Any combination of a.) To d.)
• 6. f.) All information a.) To d.)

The electronics save the relevant information the documents generated in the master terminals. A uniform user software ensures compatibility secure data transfers between the terminal and the ESP. The information to be stored is de that are important in the civil law sense. (Names, Date, transaction value and s. w.)

Sensors

The information to be sensed serves the Er identifier of the user.

In addition to the sensors for the signature recognition, further recognition features can be provided on the ESP, which can be used separately or combined:

• a) The signature
  This is z. B. several times performed by the customer when issued by the house bank and stored electronically at the bank and in the ESP. The recognition software allows deviations within certain tolerance ranges (pattern recognition), but also defines clear information content that shows a very high probability of identifying the user.
  The detection of the course of the writing can either take place via a tiltable about a pivot point in relation to the longitudinal axis of the writing instrument in the lead mine, which is enclosed, for example, laterally and from above by numerous piezo elements in order to spherically detect the deflection. This provides a signal-generating device that enables dynamic signaling in proportion to the deflection of the lead in the pin housing. The number of piezo elements must be selected so that the lead always touches at least two elements; this enables uninterrupted signal transmission.
  In a second solution, the writing process is carried out by an induction sensor arranged in the pen, which detects the movement of a magnetic mine ball.
  Both solutions should be done in conjunction with a time measurement.
• b) The fingerprints
  When writing, the user grips the ESP with the index finger and thumb. Here, in his usual style, he touches the sensor-active surfaces (fingerprint detection sensors) located on the ESP, which electronically recognize the shape of the groove and certain characteristics that are unique to it.

If necessary, the combination with other identifiers characteristics. For example, an encoded Key in with the clip of the ballpoint pen. For this is on the lateral surface of the pin in the area of the lower At the end of the clip, a pressure sensor is provided against which the the free end of the clip can be pressed. By repeated cure For example, pressing the clip end can be one of the An number of keystrokes can be entered. At Multi-digit PINs can be used to enter the individual numbers Final signal can be completed, which can be ken clip end can be generated. Alternatively, this is the procedure can also be used as Morse code.

After recognizing the signature, fingerprints and Further identification features are released in advance defined processes for certain applications. Finally can the electronic link to the respective document a corresponding master terminal. Finally, the various sensors or identifi cation means (writing recognition, finger detection impressions or keying with the clip) independently be realized differently or individually on a pin.

Switching and signaling elements

The ESP can function as conventional without the activated functions ballpoint pen can be used.

The electronic signature functions can be activated via a rotary movement of the cap or another switching device.  

Furthermore, the LED lights or acoustic signals Operational readiness, transfer and / or rejection authorization (simplex / duplex).

Via a PC or a separate terminal, the in ESP stored data can be read out and / or deleted. This process should also appear.

software

The operating system can e.g. B. be a Windows CE solution. It is important that the processes are stable and relatively trouble-free expire. The type of operating system depends on the used digital signal processors (DSP's) and the Si security requirements of the applications. The bun is for Security in Information Technology (BSI) to be used for testing and certification.

The applications are based on the various requirements and are in terms of access and encryption standardize selection algorithms.

Since the security levels are staggered, depending on the Ap a standardized preset combination tion for the respective requirements or depending on the importance of a transaction be felt. The licensees are free, the gefor to define another security level.

The licensees will receive a standardized software package with which they can read their applications.

Practical application examples Activation of the ESP

The customer would like to participate in and receive the ESP procedure from his house bank the ESP ballpoint pen. Without his son Credit cards are available through his house bank the licensed participant of the ESP procedure in  the individual channels of the ESP entered.

The customer signs approx. 10 times with the ESP ballpoint pen his signature on a sheet of paper in the presence of the bank employees. This has previously activated the terminal. The Evaluation of the signature samples is in the ESP and the Bank computer fed in, possibly also the fingerprints of the index finger and thumb of the writing hand.

Equipment of the POS (Point-of-Sale)

Each POS is, for example, with a registered adap equipped for an RS232 blue tooth radio interface, d. H. the small device is simply an adapter to the PC or the computer till on the existing plug-in direction set.

The adapter works, for example, as a blue tooth master Interface and automatically detects every active slave in nearby.

For higher security levels, such as B. the combination of Signature and fingerprints, is software for the additional comparison via a shortly to be activated Control connection required.

Customer activity On the way to work At the gas station

The customer names his petrol pump and determines on the Checkout the payment method: EC card. The gas station attendant presses the cash register: EC card; the customer switches on the ESP (Rotation of the cap); the customer signs the receipt. The receipt will be in the store after signature ESP read.  

Back in the car

The ESP gives the signal for the immobilizer. The user zer drives the vehicle to his work place. At the Entering the building, he turns on the ESP, the door opens and at the same time his time of day account is activated.

At work

The user activates his workstation - PC. With be ner ID is also the depth of the access authorization regulated to the company data.

Business letter Order by signature

He places a written order on the PC and at writes on any piece of paper. The amount the document content (order volume) is compared with permission and the document will be checked the authorization for shipping released.

In the lunch break

In the canteen he confirms the value of the food with the ESP.

Leaving work in the evening

The user logs off from the PC via ESP. On time the deregistration will be booked.

On the way to shopping, he gets cash from the machine: He confirms the payment amount on the machine PAD by sub font.

On the Internet

He pays by EUROCARD - recognizable for him by sub writing and fingerprints.

The framework conditions for the individual applications are stored in the ESP and can be accessed through the service terminal the bank, the PC at home or a separate terminal read and transferred to a program.

Licensing of third parties by the house bank

The house bank is the issuing bank and monitors all entries in the ESP. You can by separate agreements with various Card organizations, companies and other service providers Influence clearing and conditions. Further it can save various service providers by importing it into Read channels to participate in customer activities sen. This, of course, only if the customer requests it.

Various service products can be bought through the bank are offered to the customer, this being the issuing bank keeps an overview.

The bank can provide the customer with a full service without a big deal offer wall and earn on all activities of the customer with, be it through commissions, predictable services or through Third Party Licenses.

Security in comparison

EC and credit cards according to the state of the art today the respective signature of the Owner. This can easily be copied. The Per Sonal at the POS is often overwhelmed with the identity checks. It abuse occurs.

The ESP does not contain this signature; white when lost  the finder doesn't know what the signature looks like he would even misused about his fingerprints ten.

Abuse by ESP is almost impossible. The sy stem is not only safe, but also easy to use. The user signs with his signature, more Not.

The scalability of the security levels can depend on needs may be higher or lower.

All existing payment and access systems can be simple be implemented.

The customer identifies himself e.g. B. at the gas station expressly not towards the staff, but towards of society. Whether this the customer information on it Personnel want to pass on or not, it is left up to them sen. Furthermore, only the guarantee mentioned in each case organization informs about the organization concerned Transaction.

Other uses

Due to the radio transmission and the algorithms of different security levels that can be queried by the authorized master, a number of other functions, not yet described in detail, can be integrated, such as. B .:

• 1. Cell phone activation
  The ESP is plugged into the cell phone and replaces the SIM card
• 2. Registration of the identity card data (separate Channel)
• 3. medical data
• 4. Electronic marking of checks and transfer forms  
• 5. Replacement of the Pay TV access card
• 6. Ticket and ticket booking
• 7. new reservation, ordering and payment system for Hotels, restaurants, rental cars, canteens etc. s. w.

For all activities, the service providers want to know who when which transaction with which economic significance has triggered and whether this is also due to a payment agreement speak to a third party with a recognized good credit rating (bank or similar) is covered.

Comfort and legal certainty

The signature documents in almost all countries of the world World an act of will that can be used in court. The customer below only physically writes a receipt on request. He expressly does not identify himself with the person sonal. Known queries and tests run in the background exams. The customer does not have to do the processes in detail understand.

The ESP system is the only system that offers both: customers comfort and maximum security. It also offers dynamic flexibility in the design of the service spectrum.

The ESP offers converged services and integrates the best services in one device, namely a conventional one pen. The services can be used as before become; where an upgrade has taken place, the Customer comfort increased. The providers are looking for simple and sta bile, especially safe solutions. The invention before direction and the process represent an economic and practical solution.

The invention is illustrated by way of example in the drawing  and described in detail below:

FIG. 1 shows a side cut view of a first execution form of the ESP-pin invention,

Fig. 2 is a side view in section of a second Ausfüh approximate shape of the ESP pin and

Fig. 3 is a side view of a blue tooth interface.

The same or corresponding components are with the same Be provide traction marks.

According to Fig. 1 and 2, the pin according to the invention consists of an elongated cylindrical pin housing 1, at the lower end of which a writing tip sen 2 and are provided at the upper end of a push button 3. The pen does not differ in its appearance from a conventional writing instrument that is designed as a mechanical pencil or a ballpoint pen. At the upper end below the push button 3 , a retaining clip 4 is provided, which sits in a groove provided on the outer casing of the pin housing 1 . The holding clip 4 is rotatable; turning the ESP turns on. In the area of the free end of the holding clip 4 , a pressure sensor 4 a is arranged in the lateral surface of the pin. The holding clip can be pressed against the pressure sensor by the user, for example in order to enter the number of a PIN. The spring rate of the retaining spring ensures that the retaining clip springs back after each depression.

At the lower end above the writing tip 2 , a rubberized grip 5 is provided, which serves as a point of attack for the fingers of the user. On the support surface of the recessed grip 5 , a fingerprint detection sensor 6 is seen before, which is used to detect the user's fingerprint. The fingerprint detection sensor 6 is practically invisible to the user. In addition to the fingerprint detection sensor, a further sensor for detecting the contour of the thumb can be provided; The combination of fingerprint and thumbprint enables security to be scaled again.

A lead 7 is rotatably received in the pin housing 1 . The mine 7 has a substantially cylindrical shell 7 a, the outer diameter of which is slightly smaller than the inner diameter of the pin housing. In the middle, the lead jacket 7 a is spherical. This ball 7 b is rotatably received in a groove 8 provided on the inside of the pin housing. The mine 7 is rotatably mounted around the ball 7 b serving as a pivot point in relation to the longitudinal axis of the pin housing 1 . On the inner surface of the pin housing 1 , ring sensors 9 and 10 are arranged at a predefined distance from the center of rotation of the mine. The ring sensors 9 and 10 consist of a large number of individual sensors, which are designed as piezo elements and, depending on the deflection of the lead 7 in the pin housing 1, provide a dynamic electrical pulse train and / or linear train which are characteristic of the manuscript of the user. The higher the pressure exerted on one of the piezo elements, the higher the voltage supplied. In addition, a pressure sensor 9 a can be seen above the mine. The ring sensors 9 and 10 can also be designed as optical individual sensors, which also deliver an optical pulse sequence and / or linear sequence depending on the deflection of the mine.

Electronics and a memory 11 for evaluating the signals delivered by the sensors are provided approximately in the center of the pin housing 1 . Above the electronics 11 , the energy supply means 12 designed as batteries are arranged.

The radio interface designed as a blue tooth interface is arranged in the area of the push button 3 .

At the top of the push button 3 , a light-emitting diode 13 is finally provided, which indicates both the transmission of information to and from the pen and also signals the rejection and / or authorization of a user. Different colored light-emitting diodes can be provided for the under different applications. The pen shown in FIG. 1 can be designed both as a mechanical pencil and as a ballpoint pen.

The pen shown in Fig. 2 is formed as a ballpoint pen. This differs from the embodiment shown in FIG. 1 in that the lead 7 is firmly accommodated in the pin housing 1 . The ball 14 of the ballpoint pen refill is made of a magnetic steel with a north and a south pole. At the lower end of the pin housing 1 , an induction sensor 15 is provided. In the induction sensor 15 provides, depending on the rotation of the ball 14, an electrical pulse train and / or linear sequence, which is user-specific and can be evaluated by the electronics and thus serves to uniquely identify the user.

A recessed grip 5 with a fingerprint detection sensor 6 is also seen on the ballpoint pen shown in FIG. 2; alternatively, a further sensor for detecting the thumbprint can be provided.

In Fig. 3, the receiving station of the blue tooth interface shown as a master terminal is shown. The master terminal has a square housing 16 and is provided at its upper end with a transmitting and receiving antenna 17 which receives the signals emitted by the pins and sends the necessary information back to them. The master terminal is connected to the serial interface of a computer via a cable 18 .

Reference list

1

Pin housing

2

Writing tip

3rd

Push button

4

Holding clip

4

a pressure sensor

5

Recessed grip

6

sensor

7

mine

7

a coat

7

b sphere

8th

Groove

9

Ring sensor

9

a pressure sensor

10th

Ring sensor

11

Electronics and storage

12th

Batteries

13

led

14

Bullet

15

Induction sensor

16

casing

17th

antenna

18th

electric wire

Claims (26)

1. pen with a pen housing ( 1 ), in which a lead ( 7 ) is accommodated, characterized by a font-specific signal-providing detection means for detecting the writing of a user, electronics ( 11 ) for evaluating the signal generated by the detection means, a memory in which user-specific information can be stored, energy supply means for operating the pen and a radio interface for sending and / or receiving data. 2. Pen according to claim 1, characterized records that the detection means at least have a sensor. 3. Pen according to claim 2, characterized in that the lead ( 7 ) in relation to the longitudinal axis of the pin in this tiltable about a pivot point, and that the sensor is designed as an elec tric signal generating device which is proportional to the radial and / or axial deflection generates orthogonal dynamic signals that are user specific. 4. Pen according to claim 3, characterized in that the sensor has at least one arranged at a certain distance from the fulcrum and the mine ( 7 ) enclosing ring element which is provided with a plurality of individual sensors. 5. Pen according to claim 3, characterized in that the sensor has at least one upper half of the mine arranged pressure sensor ( 9 a). 6. Pen according to claim 4 or 5, characterized in that the individual sensors have piezo elements which, depending on the deflection of the mine ( 7 ) deliver an electrical pulse train and / or linear train. 7. Pen according to claim 6, characterized in that the individual sensors have optical elements which, depending on the deflection of the lead ( 7 ), provide an optical pulse sequence and / or linear sequence which is characteristic of the user's signature. 8. Pen according to claim 2, characterized in that the refill ( 7 ) is designed as a ballpoint refill, that the ball ( 14 ) of the refill is magnetically designed with at least one north and one south pole, and that the sensor as induction -Sensor ( 15 ) is formed, which in dependence on the rotation of the ball ( 14 ) delivers an electrical pulse sequence and / or linear sequence which is characteristic of the user's signature. 9. Pen according to one of claims 1 to 8, characterized by at least one fingerprint detection sensor ( 6 ) and / or thumbprint detection sensor. 10. Pen according to one of claims 1 to 9, characterized characterized by a switching element for and turn off. 11. Pen according to claim 10, characterized in that the switching element is designed as a rotatably mounted on the pin retaining clip ( 4 ). 12. Pen according to one of claims 1 to 11, characterized is characterized by signaling means which the Transfer of information to and from the pen demonstrate. 13. Pen according to one of claims 1 to 12, characterized is characterized by signaling means which the Show rejection and / or authorization. 14. Pen according to one of claims 11 or 13, there characterized in that the signal medium an optical and / or acoustic signal ben. 15. A pen according to any one of claims 1 to 14, characterized in that a pressure sensor ( 4 a) is provided on the pin in the region of the free end of the holding clip provided on the pin, against which the holding clip can be pressed. 16. Procedure for uniquely identifying a user zers for a specific application with the following Process steps: Entering the records of a User, saving and evaluating the font history, Compare the course of the writing with an identifier tion register (ID), transfer of the signature to a receiving station (master terminal) and reading and Transfer of the applications activated by the master terminal tion. 17. The method according to claim 16, characterized records that the writing process with others user-specific information is compared. 18. The method according to claim 16 or 17, characterized characterized that the fingerprint and / or the user's thumbprint recorded and abge is compared. 19. The method according to any one of claims 16 to 18, there characterized in that for the Application required information, such as Legs Transaction number (TAN) or a transaction code (TAC), transferred and read. 20. The method according to any one of claims 16 to 19, there characterized by that to be working document imported from the master terminal and saved. 21. The method according to any one of claims 16 to 18, there characterized in that the Spei content via a home or service terminal are given. 22. The method according to any one of claims 16 to 21, characterized  characterized that the Ortho gonality between vertical cover letter and hori zonal deflection is checked. 23. pin with a pin housing ( 1 ), in which a lead ( 7 ) is accommodated, characterized by a user-specific signal-providing detection means, electronics ( 11 ) for evaluating the signal generated by the detection means, a memory in which user-specific Information can be stored, energy supply means for the operation of the pen and a radio interface for sending and / or receiving data. 24. Pen according to claim 23, characterized in that the detection means have a sensor ( 6 ) for detecting the fingerprint of the user. 25. Pen according to claim 23, characterized in that the detection means have a pressure sensor ( 4 a) which is arranged in the region of the free end of a retaining clip provided on the pin and against which the retaining clip can be pressed. 26. Pen with a pin housing ( 1 ) in which a lead ( 7 ) is received, characterized in that the detection means have a sensor according to claim 24 and a pressure sensor according to claim 25.