GB2320597A - Card-controlled personal computer - Google Patents

Card-controlled personal computer Download PDF

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Publication number
GB2320597A
GB2320597A GB9807636A GB9807636A GB2320597A GB 2320597 A GB2320597 A GB 2320597A GB 9807636 A GB9807636 A GB 9807636A GB 9807636 A GB9807636 A GB 9807636A GB 2320597 A GB2320597 A GB 2320597A
Authority
GB
United Kingdom
Prior art keywords
personal computer
computer system
card
reader
amount
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
GB9807636A
Other versions
GB9807636D0 (en
Inventor
David William Gilbert
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
POWERDESK PLC
Original Assignee
POWERDESK PLC
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from GBGB9721281.5A external-priority patent/GB9721281D0/en
Application filed by POWERDESK PLC filed Critical POWERDESK PLC
Priority to GB9807636A priority Critical patent/GB2320597A/en
Publication of GB9807636D0 publication Critical patent/GB9807636D0/en
Publication of GB2320597A publication Critical patent/GB2320597A/en
Priority to PCT/GB1998/002992 priority patent/WO1999018544A1/en
Priority to AU27017/99A priority patent/AU2701799A/en
Withdrawn legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F21/00—Security arrangements for protecting computers, components thereof, programs or data against unauthorised activity
    • G06F21/30—Authentication, i.e. establishing the identity or authorisation of security principals
    • G06F21/31—User authentication
    • G06F21/34—User authentication involving the use of external additional devices, e.g. dongles or smart cards
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F21/00—Security arrangements for protecting computers, components thereof, programs or data against unauthorised activity
    • G06F21/60—Protecting data
    • G06F21/62—Protecting access to data via a platform, e.g. using keys or access control rules
    • G06F21/6218—Protecting access to data via a platform, e.g. using keys or access control rules to a system of files or objects, e.g. local or distributed file system or database
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06Q—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES, NOT OTHERWISE PROVIDED FOR
    • G06Q20/00—Payment architectures, schemes or protocols
    • G06Q20/08—Payment architectures
    • G06Q20/12—Payment architectures specially adapted for electronic shopping systems
    • G06Q20/127—Shopping or accessing services according to a time-limitation
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06Q—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES, NOT OTHERWISE PROVIDED FOR
    • G06Q20/00—Payment architectures, schemes or protocols
    • G06Q20/30—Payment architectures, schemes or protocols characterised by the use of specific devices or networks
    • G06Q20/34—Payment architectures, schemes or protocols characterised by the use of specific devices or networks using cards, e.g. integrated circuit [IC] cards or magnetic cards
    • G06Q20/342—Cards defining paid or billed services or quantities
    • G—PHYSICS
    • G07—CHECKING-DEVICES
    • G07F—COIN-FREED OR LIKE APPARATUS
    • G07F17/00—Coin-freed apparatus for hiring articles; Coin-freed facilities or services
    • G07F17/0014—Coin-freed apparatus for hiring articles; Coin-freed facilities or services for vending, access and use of specific services not covered anywhere else in G07F17/00
    • G—PHYSICS
    • G07—CHECKING-DEVICES
    • G07F—COIN-FREED OR LIKE APPARATUS
    • G07F17/00—Coin-freed apparatus for hiring articles; Coin-freed facilities or services
    • G07F17/16—Coin-freed apparatus for hiring articles; Coin-freed facilities or services for devices exhibiting advertisements, announcements, pictures or the like
    • G—PHYSICS
    • G07—CHECKING-DEVICES
    • G07F—COIN-FREED OR LIKE APPARATUS
    • G07F7/00—Mechanisms actuated by objects other than coins to free or to actuate vending, hiring, coin or paper currency dispensing or refunding apparatus
    • G07F7/02—Mechanisms actuated by objects other than coins to free or to actuate vending, hiring, coin or paper currency dispensing or refunding apparatus by keys or other credit registering devices
    • G07F7/025—Mechanisms actuated by objects other than coins to free or to actuate vending, hiring, coin or paper currency dispensing or refunding apparatus by keys or other credit registering devices by means, e.g. cards, providing billing information at the time of purchase, e.g. identification of seller or purchaser, quantity of goods delivered or to be delivered
    • G—PHYSICS
    • G07—CHECKING-DEVICES
    • G07F—COIN-FREED OR LIKE APPARATUS
    • G07F7/00—Mechanisms actuated by objects other than coins to free or to actuate vending, hiring, coin or paper currency dispensing or refunding apparatus
    • G07F7/08—Mechanisms actuated by objects other than coins to free or to actuate vending, hiring, coin or paper currency dispensing or refunding apparatus by coded identity card or credit card or other personal identification means
    • G07F7/0866—Mechanisms actuated by objects other than coins to free or to actuate vending, hiring, coin or paper currency dispensing or refunding apparatus by coded identity card or credit card or other personal identification means by active credit-cards adapted therefor
    • G—PHYSICS
    • G07—CHECKING-DEVICES
    • G07F—COIN-FREED OR LIKE APPARATUS
    • G07F7/00—Mechanisms actuated by objects other than coins to free or to actuate vending, hiring, coin or paper currency dispensing or refunding apparatus
    • G07F7/08—Mechanisms actuated by objects other than coins to free or to actuate vending, hiring, coin or paper currency dispensing or refunding apparatus by coded identity card or credit card or other personal identification means
    • G07F7/0873—Details of the card reader
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47B—TABLES; DESKS; OFFICE FURNITURE; CABINETS; DRAWERS; GENERAL DETAILS OF FURNITURE
    • A47B2200/00—General construction of tables or desks
    • A47B2200/0066—Workstations
    • A47B2200/0073—Desk with integrated computer
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F2221/00—Indexing scheme relating to security arrangements for protecting computers, components thereof, programs or data against unauthorised activity
    • G06F2221/21—Indexing scheme relating to G06F21/00 and subgroups addressing additional information or applications relating to security arrangements for protecting computers, components thereof, programs or data against unauthorised activity
    • G06F2221/2135—Metering
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F2221/00—Indexing scheme relating to security arrangements for protecting computers, components thereof, programs or data against unauthorised activity
    • G06F2221/21—Indexing scheme relating to G06F21/00 and subgroups addressing additional information or applications relating to security arrangements for protecting computers, components thereof, programs or data against unauthorised activity
    • G06F2221/2137—Time limited access, e.g. to a computer or data
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F2221/00—Indexing scheme relating to security arrangements for protecting computers, components thereof, programs or data against unauthorised activity
    • G06F2221/21—Indexing scheme relating to G06F21/00 and subgroups addressing additional information or applications relating to security arrangements for protecting computers, components thereof, programs or data against unauthorised activity
    • G06F2221/2149—Restricted operating environment

Landscapes

  • Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Business, Economics & Management (AREA)
  • Computer Security & Cryptography (AREA)
  • Accounting & Taxation (AREA)
  • Computer Hardware Design (AREA)
  • Software Systems (AREA)
  • Strategic Management (AREA)
  • General Engineering & Computer Science (AREA)
  • General Business, Economics & Management (AREA)
  • Databases & Information Systems (AREA)
  • Bioethics (AREA)
  • General Health & Medical Sciences (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Health & Medical Sciences (AREA)
  • Finance (AREA)
  • Control Of Vending Devices And Auxiliary Devices For Vending Devices (AREA)
  • Lock And Its Accessories (AREA)

Abstract

A personal computer is coupled to a card reader, the output of the reader being arranged to control operation of the personal computer, for example whether the personal computer starts-up, and/or whether the user is allowed operational access to the computer. In a system wherein the computer is hired to a user, the card may indicate the amount of credit available to the user. For security purposes, for example in office use, the card may determine the type of access afforded, or the facilities available, to a user. In a preferred embodiment, the card is a smart card and the computer and card-reader are integrated into an item of furniture, e.g. a desk or writing-table.

Description

Computers The present invention relates to computers of the type commonly known as personal computers.
In general, a personal computer (PC) provides sufficient computing power for use by an individual, and it may provide a number of facilities, depending on resident or loadable programmes, or by virtue of being coupled in network of computers. Word processing, game playing, and access to the Internet are three facilities often required, individually or in combinations. Input to the computer is commonly by way of a keyboard, mouse or touchpad, and the output is commonly a flat screen or CRT display, optionally with an audible output.
Many PCs consist of a central processor (base unit) with separate or separable input and output means and are sufficiently large as to be effectively non-portable.
Portable and laptop computers are a variety of PC which normally have the input and output means constructionally integrated with the central processor, the display being a flat screen, and so can be more easily transported by the individual. Nevertheless, although weight and volume are reduced, the carrying thereof is not without its difficulties, and there is always the danger of damage, loss or theft during a journey. In addition, factors such as the computing power, and the quality of the display, are often a compromise resulting from the need to provide portability.
It may therefore be considered desirable to have stations where a PC is available to a potential user, e.g. on payment of a charge. For example, a suite of PCs may be provided at an airport for use by businessmen while they are waiting for their flight, or rooms at a hotel may each be fitted with a PC for use by a businessman as a word processor or for access to the Internet, of for use by a family for playing games.
Under such circumstances, the problem arises as to how use of the computer can be controlled. The present invention provides a personal computer system, comprising a personal computer coupled to a card reader, the output of the reader being arranged to control operation of the personal computer.
Although the term "reader" is used, implying derivation of information from the card, it should be understood that there will often, although not necessarily, also be the supply of information to the card, this information being used or stored on the card for example. Derivation of information from the card may be effected by various known means, including the use of magnetic or optical interaction, radio transmission and direct electrical contact, and the same type of means, or a different one of the known means can be used for writing to the card.
In one preferred embodiment, the output of the reader determines whether the PC starts-up. This could be done, for example, by incorporating part of the PC start -up or boot system in a smart card, or a card containing a digital memory such as a ROM, so that presence of the smart card is essential for getting the computer operative. Alternatively, or additionally, information on the card could be used to provide a signal determining whether and/or which facilities on the PC are available to the user, that is to say, whether and/or what functional access is afforded to the user.
Either of these two alternatives could use a read-only card. However, in the latter alternative, such information could include an indication as to the amount of credit allowed to the user (entered, for example, on the card at or prior to purchase), and since this amount is expected to change, the card will also need to be writable. Where the card is a passive card, for example of the type containing a rewritable data store such as a magnetic strip, the store could be re-written under control of the card reader or the PC to decrease the amount of credit as the PC is used. Where the card is a smart card, the decrease could alternatively be controlled by the smart card itself in response to a signal indicative of the fact of operation and/or the mode of operation of the computer. In either case, the decrease could be a function of time that the computer is used, and, optionally, the rate of decrease could be related to the computer facility which has been selected (see below).
Thus start-up of the PC or functional access thereto may be enabled in response to detection of more than a first predetermined amount of credit on the card. The PC may be caused to close down or disable access (hereinafter both will be covered by the term "close") when less than a second predetermined amount of credit is detected on the smart card. In one instance, the first and second amounts may be the same, e.g. zero, but preferably the first amount is greater than the second. In the latter case a warning of imminent closure of, the PC, such as in the form of a display or sound, may be produced by the PC when the decreasing amount of credit reaches a third amount intermediate the first and second amounts.
In either case, it is preferred that detection of the second predetermined amount causes the PC to store parameters relating to the state of the computer at that time, thereby avoiding loss of data when the computer closes, for example when a document is undergoing wordprocessing. For security, recovery of the data may be permitted only in response to use of the same card.
Although the PC may provide a single facility, it will often be capable of providing a plurality of selectable facilities. In such a case, while it could be that each of the facilities is selectable by the user, it can be arranged that the output of the reader controls which one, or which combination, of the facilities are made available to the user.
The card itself could be arranged to be used for other purposes, if desired. For example, in a hotel, the card could be the same as that permitting entry to the hotel room and/or permitting the use of other services, such as the purchasing of items, including meals and refreshments.
The system of the invention could be used in ways other than for charging a customer for use of a PC. For example, the card could be used as a security device without which access to a PC, or to all or part of information or facilities on a PC, is effectively not permitted. Thus the card could contain information relating to the user, indicating which facilities are accessible to that particular user, and which files are accessible. For example, some employees in an office may be restricted to use of a PC as a word processor, with access restricted to a certain set of stored document files, whereas others may have access to all word processing files and additionally have access to the Internet. Such a system is preferably arranged to work in conjunction with the requirement to enter a PIN Personal Identification Number) via a keyboard. In a similar manner, certain facilities in a PC installed in a hotel room might only be accessible to hotel employees.
Preferably, the PC is in the form of a item of furniture either as described in our copending International Patent Application No. PCT/GB96/02477, or as described in our copending British Patent Application No. 0619697.7, with the card reader also integrated into the furniture. The slot or other receptacle for the card could also be concealed by a false drawer front or other movable or removable part of the furniture. In either case, the item of furniture could be a desk or writing table, inter alia.
The copending British Application relates to an item of furniture having a substantially flat top surface or substantially flat work surface and a display which comprises a flat screen display device and has a substantially flat surface overall, wherein the top or work surface includes an aperture or recess arranged to accommodate the flat screen display in a flush position with its said flat surface substantially flush with the top or work surface, the display being displaceable out of the top or work surface from the flush position to a viewing position.

Claims (19)

CLAIMS:
1. A personal computer system, comprising a personal computer coupled to a card reader, the output of the reader being arranged to control operation of the personal computer.
2. A PC system according to claim 1 wherein the output of the reader determines whether the personal computer starts-up, and/or whether the user is allowed operational access to the computer.
3. A personal computer system according to claim 2 for use with a card on which is stored an indication of the amount of credit available to the user, wherein the reader enables start-up of the personal computer in response to detection of more than a first predetermined amount of credit on the personal computer.
4. A personal computer system according to claim 3 arranged to cause the personal computer to close down or prohibit functional access when less than a second predetermined amount of credit is detected on the smart card.
5. A personal computer system according to claim 4 wherein the first and second amounts are the same.
6. A personal computer system according to claim 5 wherein the first amount is greater than the second amount.
7. A personal computer system according to claim 5 or claim 6 wherein the first amount is zero.
8. A personal computer system according to any one of claims 4 to 7 wherein detection of a third predetermined amount of credit greater than the second amount causes the personal computer to issue a warning (message/sound).
9. A personal computer system according to any one of claims 4 to 8 wherein detection of the second predetermined amount causes the personal computer to store parameters relating to the state of the computer at that time.
10. A personal computer system according to any one of claims 3 to 9 wherein the amount of credit on the card is decreased according to the amount of time that the personal computer is operated by the user.
11. A personal computer system according to any preceding claim wherein the personal computer provides a plurality of selectable facilities.
12. A personal computer system according to claim 11 wherein the output of the reader controls which one, or which combination, of the facilities are made available to the user.
13. A personal computer system according to claim 11 wherein each of the facilities is selectable by the user.
14. A personal computer system according to claim 10 in combination with any one of claims 11 to 13, wherein the rate of decrease is determined by which facility is selected.
15. A personal computer system according to any preceding claim wherein the card reader is for use with a passive card having information encoded thereon.
16. A personal computer system as claimed in any one of claims 1 to 15 wherein the card reader is a smart card reader.
17. A personal computer system according to claim 15 for use with a smart card which contains at least part of the start-up system of the personal computer, whereby the computer cannot be started without the presence of a said smart card.
18. A personal computer system according to any preceding claim wherein the reader is also arranged to supply information to the card.
18. A personal computer system according to claim 10 in combination with claim 16 or claim 17 and comprising a smart card which is arranged to perform said decreasing of the amount of credit.
19. A personal computer system comprising a personal computer and a card reader substantially as hereinbefore described.
GB9807636A 1997-10-08 1998-04-14 Card-controlled personal computer Withdrawn GB2320597A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
GB9807636A GB2320597A (en) 1997-10-08 1998-04-14 Card-controlled personal computer
PCT/GB1998/002992 WO1999018544A1 (en) 1997-10-08 1998-10-07 Computers
AU27017/99A AU2701799A (en) 1997-10-08 1998-10-07 Computers

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GBGB9721281.5A GB9721281D0 (en) 1997-10-08 1997-10-08 Computers
GB9807636A GB2320597A (en) 1997-10-08 1998-04-14 Card-controlled personal computer

Publications (2)

Publication Number Publication Date
GB9807636D0 GB9807636D0 (en) 1998-06-10
GB2320597A true GB2320597A (en) 1998-06-24

Family

ID=26312387

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9807636A Withdrawn GB2320597A (en) 1997-10-08 1998-04-14 Card-controlled personal computer

Country Status (3)

Country Link
AU (1) AU2701799A (en)
GB (1) GB2320597A (en)
WO (1) WO1999018544A1 (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2340649A (en) * 1998-07-13 2000-02-23 Neil Thomas Anne Elizabeth Mar Public access to the Internet
WO2000054125A1 (en) * 1999-03-05 2000-09-14 Hewlett-Packard Company Computing apparatus and methods using secure authentication arrangement
FR2825492A1 (en) * 2001-05-31 2002-12-06 Acive Equipment for controlling access to personal computer, comprises electronic lock interposed between computer and external peripherals and released by the use of smart card containing electronic key
EP1271277A2 (en) * 2001-06-26 2003-01-02 Redstrike B.V. Security system and software to prevent unauthorized use of a computing device
EP1443378A2 (en) * 2003-01-30 2004-08-04 Kabushiki Kaisha Toshiba Information Processing Apparatus and User Operation Restriction Method used in the Same
US7779267B2 (en) 2001-09-04 2010-08-17 Hewlett-Packard Development Company, L.P. Method and apparatus for using a secret in a distributed computing system
GB2498428A (en) * 2011-12-05 2013-07-17 Ibm Information processing device with mounted authentication device using decreasing count value to prevent theft

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IL151025A0 (en) * 2002-07-31 2003-02-12 Traffic violation processing method
JP2004164519A (en) 2002-09-19 2004-06-10 Konami Co Ltd Authentication processing hardware, authentication processing system, and use control hardware
US20090249408A1 (en) * 2008-03-25 2009-10-01 Inflight Investments Inc. Access control system for inflight services at passenger seat
FR3032540B1 (en) 2015-02-06 2018-09-07 Dover Europe Sarl ADVANCED PROTECTION SYSTEM OF CONSUMABLE OR DETACHABLE ELEMENTS

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EP0120771A2 (en) * 1983-03-18 1984-10-03 Compagnie Industrielle Des Techniques Pour L'informatique, Citi, Sa. Computer installation in civic centres
WO1985002696A1 (en) * 1983-12-06 1985-06-20 Alexander Battison Gardiner Computer system
US4683553A (en) * 1982-03-18 1987-07-28 Cii Honeywell Bull (Societe Anonyme) Method and device for protecting software delivered to a user by a supplier
US4951249A (en) * 1986-10-24 1990-08-21 Harcom Security Systems Corp. Method and apparatus for controlled access to a computer system
US5083309A (en) * 1989-11-23 1992-01-21 Schlumberger Industries Method and a system enabling software to be run securely
US5187352A (en) * 1989-01-03 1993-02-16 William Blair Microprocessor controlled security system for computers

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GB9520965D0 (en) * 1995-10-13 1995-12-13 Gilbert David Computer furniture
KR970022643A (en) * 1995-10-24 1997-05-30 허광호 Versatile table-type computer case inserts a rotating plate to adjust the monitor's orientation and angle
GB9619697D0 (en) 1996-09-20 1996-11-06 Powerdesk Plc Displays
DE29710962U1 (en) * 1997-06-18 1997-08-21 Berliner Verkehrs Betriebe Bvg Housing for service and personnel dispatch terminal

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US4683553A (en) * 1982-03-18 1987-07-28 Cii Honeywell Bull (Societe Anonyme) Method and device for protecting software delivered to a user by a supplier
EP0120771A2 (en) * 1983-03-18 1984-10-03 Compagnie Industrielle Des Techniques Pour L'informatique, Citi, Sa. Computer installation in civic centres
WO1985002696A1 (en) * 1983-12-06 1985-06-20 Alexander Battison Gardiner Computer system
US4951249A (en) * 1986-10-24 1990-08-21 Harcom Security Systems Corp. Method and apparatus for controlled access to a computer system
US5187352A (en) * 1989-01-03 1993-02-16 William Blair Microprocessor controlled security system for computers
US5083309A (en) * 1989-11-23 1992-01-21 Schlumberger Industries Method and a system enabling software to be run securely

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Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2340649A (en) * 1998-07-13 2000-02-23 Neil Thomas Anne Elizabeth Mar Public access to the Internet
US7069439B1 (en) 1999-03-05 2006-06-27 Hewlett-Packard Development Company, L.P. Computing apparatus and methods using secure authentication arrangements
WO2000054125A1 (en) * 1999-03-05 2000-09-14 Hewlett-Packard Company Computing apparatus and methods using secure authentication arrangement
FR2825492A1 (en) * 2001-05-31 2002-12-06 Acive Equipment for controlling access to personal computer, comprises electronic lock interposed between computer and external peripherals and released by the use of smart card containing electronic key
EP1271277A2 (en) * 2001-06-26 2003-01-02 Redstrike B.V. Security system and software to prevent unauthorized use of a computing device
EP1271277A3 (en) * 2001-06-26 2003-02-05 Redstrike B.V. Security system and software to prevent unauthorized use of a computing device
WO2003001350A3 (en) * 2001-06-26 2003-03-06 Redstrike B V Security system and software to prevent unauthorized use of a computing device
WO2003001350A2 (en) * 2001-06-26 2003-01-03 Redstrike B.V. Security system and software to prevent unauthorized use of a computing device
US7779267B2 (en) 2001-09-04 2010-08-17 Hewlett-Packard Development Company, L.P. Method and apparatus for using a secret in a distributed computing system
EP1443378A2 (en) * 2003-01-30 2004-08-04 Kabushiki Kaisha Toshiba Information Processing Apparatus and User Operation Restriction Method used in the Same
EP1443378A3 (en) * 2003-01-30 2006-03-08 Kabushiki Kaisha Toshiba Information Processing Apparatus and User Operation Restriction Method used in the Same
GB2498428A (en) * 2011-12-05 2013-07-17 Ibm Information processing device with mounted authentication device using decreasing count value to prevent theft
GB2498428B (en) * 2011-12-05 2013-11-27 Ibm Information processing device that performs authentication processing
US8918899B2 (en) 2011-12-05 2014-12-23 International Business Machines Corporation Information processing device, control method and program

Also Published As

Publication number Publication date
WO1999018544A1 (en) 1999-04-15
GB9807636D0 (en) 1998-06-10
AU2701799A (en) 1999-04-27

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