WO2006134389A1 - A device for helping to prevent the unauthorised readng of personal identification numbers - Google Patents

A device for helping to prevent the unauthorised readng of personal identification numbers Download PDF

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Publication number
WO2006134389A1
WO2006134389A1 PCT/GB2006/002227 GB2006002227W WO2006134389A1 WO 2006134389 A1 WO2006134389 A1 WO 2006134389A1 GB 2006002227 W GB2006002227 W GB 2006002227W WO 2006134389 A1 WO2006134389 A1 WO 2006134389A1
Authority
WO
WIPO (PCT)
Prior art keywords
light transmitting
transmitting means
display
strip
row
Prior art date
Application number
PCT/GB2006/002227
Other languages
French (fr)
Inventor
Olusanjo Scott Bamgboye
Original Assignee
Olusanjo Scott Bamgboye
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
Application filed by Olusanjo Scott Bamgboye filed Critical Olusanjo Scott Bamgboye
Publication of WO2006134389A1 publication Critical patent/WO2006134389A1/en

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Classifications

    • 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
    • G07F7/10—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 together with a coded signal, e.g. in the form of personal identification information, like personal identification number [PIN] or biometric data
    • 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
    • G06F21/70—Protecting specific internal or peripheral components, in which the protection of a component leads to protection of the entire computer
    • G06F21/82—Protecting input, output or interconnection devices
    • G06F21/84—Protecting input, output or interconnection devices output devices, e.g. displays or monitors
    • 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
    • G06Q20/341—Active cards, i.e. cards including their own processing means, e.g. including an IC or chip
    • G—PHYSICS
    • G07—CHECKING-DEVICES
    • G07F—COIN-FREED OR LIKE APPARATUS
    • G07F19/00—Complete banking systems; Coded card-freed arrangements adapted for dispensing or receiving monies or the like and posting such transactions to existing accounts, e.g. automatic teller machines
    • G07F19/20—Automatic teller machines [ATMs]
    • G—PHYSICS
    • G07—CHECKING-DEVICES
    • G07F—COIN-FREED OR LIKE APPARATUS
    • G07F19/00—Complete banking systems; Coded card-freed arrangements adapted for dispensing or receiving monies or the like and posting such transactions to existing accounts, e.g. automatic teller machines
    • G07F19/20—Automatic teller machines [ATMs]
    • G07F19/205—Housing aspects of ATMs
    • G—PHYSICS
    • G07—CHECKING-DEVICES
    • G07F—COIN-FREED OR LIKE APPARATUS
    • G07F19/00—Complete banking systems; Coded card-freed arrangements adapted for dispensing or receiving monies or the like and posting such transactions to existing accounts, e.g. automatic teller machines
    • G07F19/20—Automatic teller machines [ATMs]
    • G07F19/207—Surveillance aspects at ATMs
    • 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
    • G07F7/10—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 together with a coded signal, e.g. in the form of personal identification information, like personal identification number [PIN] or biometric data
    • G07F7/1008—Active credit-cards provided with means to personalise their use, e.g. with PIN-introduction/comparison system
    • 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
    • G07F7/10—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 together with a coded signal, e.g. in the form of personal identification information, like personal identification number [PIN] or biometric data
    • G07F7/1025—Identification of user by a PIN code
    • G07F7/1083—Counting of PIN attempts
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2219/00—Legends
    • H01H2219/054—Optical elements
    • H01H2219/058—Optical grid, collimator or microlouver
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2231/00—Applications
    • H01H2231/006—Bank automat; Cash register; Vending machine
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2239/00—Miscellaneous
    • H01H2239/032—Anti-tamper

Definitions

  • the present invention relates to a device for helping to prevent the unauthorised reading of personal identification numbers known as PIN numbers used for example in order tQ gain cash or bank account information from automatic teller machines (ATM's) or when paying for goods or services by credit or debit cards using "chip and pin”.
  • PIN numbers personal identification numbers used for example in order tQ gain cash or bank account information from automatic teller machines (ATM's) or when paying for goods or services by credit or debit cards using "chip and pin”.
  • ATM's are often fitted in the outer wall of a bank or building society and are increasingly common in shops and pubs so they are readily accessible by the general public. Also chip and pin apparatus are to found in almost all retail outlets.
  • a problem with this is that when someone uses an ATM or chip and pin apparatus it is relatively easy for another member of the public to see the number tapp ⁇ d into the ATM or chip and pin keypad by the user, for example by simply looking over his or her shoulder. Also it is known for those who are intent on committing fraud to be able to locate a camera or mirrors in the ATM hole to enable illegal reading of the pin number being tapped in. In the vast majority of cases people can access their money with confidence but this type of fraud is on the increase and there is a particular vulnerability for those using ATM's or chip and pin apparatus in busy affluent areas and crowded venues.
  • a device for helping to prevent the unauthorised reading of personal identification numbers comprising a plurality of light transmitting means adapted to be located over a numeric or alpha/numeric display, the light transmitting means being such that in use the display can only be seen when viewed from a specific range of angles and/or distances.
  • the light transmitting means may comprise a plurality of apertures.
  • the apertures may be covered with, or filled with, a transparent plastics material.
  • the light transmitting means may be defined by a plurality of tubular apertures.
  • the tubular apertures may be arranged in cells.
  • the light transmitting means may be defined by an array of interleaved slotted strips.
  • the array may comprise a first row of strips extending parallel with each other and a second row of strips also extending parallel with each other and perpendicular to the first row so as to form apertures of substantially rectangular cross-section.
  • Each strip of the first row may comprise a plurality of slots extending obliquely to the longitudinal axis of the strip and each strip of the second row may comprise a plurality of slots extending perpendicularly to the longitudinal axis of the strip.
  • the light transmitting means may be defined by a plurality of parallel tubes united together and set in a sheet of, for example, plastics material.
  • the tubes or interleaved strips may be made from a variety of materials such as aluminium or a similar material.
  • the tubes may have a circular or elliptical cross-section.
  • the present invention also extends to apparatus comprising a numerical or alpha/numerical display a plurality of light transmitting means located over the display at such a spacing as to permit a user of the apparatus to touch the display below the light transmitting means, the light transmitting means being so disposed as to permit only the user of the apparatus to see the display via the light transmitting means .
  • each aperture is preferably approximately half its depth.
  • Figure 1 shows a perspective view of part of the light transmitting means of the present invention
  • Figure 2 shows a strip used in defining the light transmitting means
  • Figure 3 shows another strip used in defining the light transmitting means, which strip is in use interleaved with the strip shown in figure 2
  • Figure 4 shows a perspective view of part of a different light transmitting means from that illustrated in figure 1 ,
  • Figure 5 shows a known ATM incorporated in the wall of a building
  • Figure 6 shows an ATM comprising a device according to the present invention.
  • each strip 2 comprises a series of slots 4 which extend obliquely to the longitudinal axis of the strip 2 and the strip 3 comprises a series of slots 5 which extend perpendicularly to the longitudinal axis of the strip 3.
  • the depth of each slot in both strips 2 and 3 is twice the width of the slots 4, 5.
  • a typical width of each slot is 2.5 mm
  • each strip 3 extends perpendicularly through each strip 2 so as to form a series of apertures having an approximately rectangular cross-section.
  • the array of strips 2 and 3 are held together by being set or embedded in a mass of transparent plastics material (not shown) which hold the array in a particular position.
  • Arrows 7, 8 and 9 in figure 1 show the paths of sight from an eye positioned at locations 10, 11 and 12 respectively.
  • arrow 7 reaches the display or keypad illustrated schematically by reference numeral 13.
  • Arrows 8 and 9 hit the side of the light transmitting apertures 1 and, therefore, do not reach the keypad 13.
  • the arrow 7 corresponds to the line of sight of a user standing in the normal position for using an ATM. Another person looking over the user's shoulder at position 11 or to the side at position 12 would not be able to see the keypad 13 and, therefore, could not see the number tapped in by the user.
  • the array is in use located above the keypad 13 at a distance sufficient to enable a user of an ATM to place his or her hand below the array and on the keypad but insufficient to permit the insertion of a camera.
  • light transmitting means 14 which performs the same function as that illustrated in figure 1.
  • the light transmitting means 14 comprises an array of cylindrical cells 15 which are set in a transparent plastics material (not shown).
  • arrows 16, 17 and 18 show the paths of sight from an eye positioned at different locations. Only an eye looking along the direction of arrow 16 will be able to see the keypad below the light transmitting means 15.
  • a manufacturing and economic advantage of the embodiment shown in figure 4 is that it can be made by setting a bundle of tubes (of for example aluminium) in a transparent plastics material to form a block. The block can then be sliced into sheets and each sheet located above the keypad 15 at the appropriate angle.
  • FIG. 5 shows a known ATM incorporated in the wall 19 of, for example, a bank or building society.
  • the ATM comprises a conventional screen 20 and an alpha numeric display such as a touch pad 21.
  • FIG 6 shows an ATM which like the ATM illustrated in figure 5 has a screen 21 and a touch pad 22.
  • this ATM comprises a device 23 according to the present invention as described above in relation to any of figures 1 to 4 and located above the touch pad a sufficient distance to enable the user of the ATM to place his or her hand between the touch pad 21 and the device 23.
  • the embodiments described above with reference to the accompanying drawings comprise light transmitting means of rectangular or circular cross-section
  • the light transmitting means may have a variety of cross-sections such as triangular or hexagonal.

Abstract

A device for helping to prevent the unauthorised reading of personal identification numbers, comprises an array of light transmitting cells (4, 5) adapted to be located over a keypad (13). The light transmitting means is such that in use the display on the keypad can only be seen when viewed from a specific range of angles and/or distances. The light transmitting means may be defined by a series of interleaved strips (2, 3) extending perpendicularly to each other or by a series of cylindrical tubes (14).

Description

A DEVICE FOR HELPING TO PREVENT THE UNAUTHORISED READNG OF PERSONAL IDENTIFICATION NUMBERS
The present invention relates to a device for helping to prevent the unauthorised reading of personal identification numbers known as PIN numbers used for example in order tQ gain cash or bank account information from automatic teller machines (ATM's) or when paying for goods or services by credit or debit cards using "chip and pin".
ATM's are often fitted in the outer wall of a bank or building society and are increasingly common in shops and pubs so they are readily accessible by the general public. Also chip and pin apparatus are to found in almost all retail outlets.
A problem with this is that when someone uses an ATM or chip and pin apparatus it is relatively easy for another member of the public to see the number tappόd into the ATM or chip and pin keypad by the user, for example by simply looking over his or her shoulder. Also it is known for those who are intent on committing fraud to be able to locate a camera or mirrors in the ATM hole to enable illegal reading of the pin number being tapped in. In the vast majority of cases people can access their money with confidence but this type of fraud is on the increase and there is a particular vulnerability for those using ATM's or chip and pin apparatus in busy affluent areas and crowded venues.
It is an aim of the present invention to reduce this risk and to this end there is provided a device for helping to prevent the unauthorised reading of personal identification numbers, comprising a plurality of light transmitting means adapted to be located over a numeric or alpha/numeric display, the light transmitting means being such that in use the display can only be seen when viewed from a specific range of angles and/or distances.
The light transmitting means may comprise a plurality of apertures.
The apertures may be covered with, or filled with, a transparent plastics material.
The light transmitting means may be defined by a plurality of tubular apertures.
The tubular apertures may be arranged in cells.
The light transmitting means may be defined by an array of interleaved slotted strips.
The array may comprise a first row of strips extending parallel with each other and a second row of strips also extending parallel with each other and perpendicular to the first row so as to form apertures of substantially rectangular cross-section.
Each strip of the first row may comprise a plurality of slots extending obliquely to the longitudinal axis of the strip and each strip of the second row may comprise a plurality of slots extending perpendicularly to the longitudinal axis of the strip. The light transmitting means may be defined by a plurality of parallel tubes united together and set in a sheet of, for example, plastics material.
The tubes or interleaved strips may be made from a variety of materials such as aluminium or a similar material.
The tubes may have a circular or elliptical cross-section.
The present invention also extends to apparatus comprising a numerical or alpha/numerical display a plurality of light transmitting means located over the display at such a spacing as to permit a user of the apparatus to touch the display below the light transmitting means, the light transmitting means being so disposed as to permit only the user of the apparatus to see the display via the light transmitting means .
The width of each aperture is preferably approximately half its depth.
Embodiments of the present invention will now be described by way of example and with reference to the accompanying drawings in which:
Figure 1 shows a perspective view of part of the light transmitting means of the present invention,
Figure 2 shows a strip used in defining the light transmitting means, Figure 3 shows another strip used in defining the light transmitting means, which strip is in use interleaved with the strip shown in figure 2,
Figure 4 shows a perspective view of part of a different light transmitting means from that illustrated in figure 1 ,
Figure 5 shows a known ATM incorporated in the wall of a building, and
Figure 6 shows an ATM comprising a device according to the present invention.
Referring to figure 1 there is shown light transmitting means 1 comprising an array of strips 2 and 3 as shown in figs 2 and 3. Each strip 2 comprises a series of slots 4 which extend obliquely to the longitudinal axis of the strip 2 and the strip 3 comprises a series of slots 5 which extend perpendicularly to the longitudinal axis of the strip 3. Preferably the depth of each slot in both strips 2 and 3 is twice the width of the slots 4, 5. A typical width of each slot is 2.5 mm
The number of slots in each strip depends on the dimensions of the display and is readily adaptable to the dimensions of the display. In use each strip 3 extends perpendicularly through each strip 2 so as to form a series of apertures having an approximately rectangular cross-section. The array of strips 2 and 3 are held together by being set or embedded in a mass of transparent plastics material (not shown) which hold the array in a particular position.
Arrows 7, 8 and 9 in figure 1 show the paths of sight from an eye positioned at locations 10, 11 and 12 respectively. As can be seen, only arrow 7 reaches the display or keypad illustrated schematically by reference numeral 13. Arrows 8 and 9 hit the side of the light transmitting apertures 1 and, therefore, do not reach the keypad 13. This means that only a person positioned with his or her line of sight along arrow 7 will be able to see the keypad 13. The arrow 7 corresponds to the line of sight of a user standing in the normal position for using an ATM. Another person looking over the user's shoulder at position 11 or to the side at position 12 would not be able to see the keypad 13 and, therefore, could not see the number tapped in by the user.
The array is in use located above the keypad 13 at a distance sufficient to enable a user of an ATM to place his or her hand below the array and on the keypad but insufficient to permit the insertion of a camera.
In an analogous manner it would also not be possible for a camera situated in the ATM to read the "PIN" number of the user.
Referring to figure 4 there shown light transmitting means 14 which performs the same function as that illustrated in figure 1. However, in figure 4 the light transmitting means 14 comprises an array of cylindrical cells 15 which are set in a transparent plastics material (not shown). As in the embodiment illustrated in figures 1-3, arrows 16, 17 and 18 show the paths of sight from an eye positioned at different locations. Only an eye looking along the direction of arrow 16 will be able to see the keypad below the light transmitting means 15.
A manufacturing and economic advantage of the embodiment shown in figure 4 is that it can be made by setting a bundle of tubes (of for example aluminium) in a transparent plastics material to form a block. The block can then be sliced into sheets and each sheet located above the keypad 15 at the appropriate angle.
Figure 5 shows a known ATM incorporated in the wall 19 of, for example, a bank or building society. The ATM comprises a conventional screen 20 and an alpha numeric display such as a touch pad 21.
Figure 6 shows an ATM which like the ATM illustrated in figure 5 has a screen 21 and a touch pad 22. However, this ATM comprises a device 23 according to the present invention as described above in relation to any of figures 1 to 4 and located above the touch pad a sufficient distance to enable the user of the ATM to place his or her hand between the touch pad 21 and the device 23.
Although the present invention can be incorporated in existing ATMs, this may be regarded by banks or ATM manufacturers as expensive. The next generation of ATMs, however, could easily incorporate the present invention during manufacture at a modest extra cost, which would soon be recouped by avoiding the need to compensate users who would otherwise be defrauded. It is also important for retailers and financial institutions to be seen by the public as taking customer security seriously.
Although the embodiments described above with reference to the accompanying drawings comprise light transmitting means of rectangular or circular cross-section, the light transmitting means may have a variety of cross-sections such as triangular or hexagonal.

Claims

L A device for helping to prevent the unauthorised reading of personal identification numbers, comprising a plurality of light transmitting means adapted to be located over a numeric or alpha/numeric display, the light transmitting means being such that in use the display can only be seen when viewed from a specific range of angles and/or distances.
2. A device as claimed in claim 1, wherein the light transmitting means comprises a plurality of apertures.
3. A device as claimed in claim 1 or claim 2, wherein the apertures are covered with, or filled with, a transparent plastics material.
4. A device as claimed in any one of the preceding claims, wherein the light transmitting means is defined by a plurality of tubular apertures.
5. A device as claimed in claim 4, wherein the tubular apertures are arranged in cells.
6. A device as claimed in any one of the preceding claims, wherein the light transmitting means is defined by an array of interleaved slotted strips.
7. A device as claimed in claim 6, wherein the array comprises a first row of strips extending parallel with each other and a second row of strips also extending parallel with each other and perpendicular to the first row so as to form apertures of substantially rectangular cross- section.
8. A device as claimed in claim 7, wherein each strip of the first row comprises a plurality of slots extending obliquely to the longitudinal axis of the strip and each strip of the second row may comprise a plurality of slots extending perpendicularly to the longitudinal axis of the strip.
9. A device as claimed in any one of claims 1 to 5, wherein the light transmitting means is defined by a plurality of parallel tubes united together and set in a sheet of plastics material.
10. A device as claimed in any one of claims 6 to 9, wherein the tubes or interleaved strips are made from aluminium or similar material.
11. A device as claimed in claim 9 or claim 10, wherein the tubes have a circular or elliptical cross-section.
12.A device as claimed in any one of the preceding claims, wherein the depth of each aperture is approximately twice its width.
13, Apparatus comprising a numerical or alpha/numerical display a plurality of light transmitting means located over the display at such a spacing as to permit a user of the apparatus to touch the display below the light transmitting means, the light transmitting means being so disposed as to permit only the user of the apparatus to see the display via the light transmitting means.
14. A device for helping to prevent the unauthorised reading of personal identification numbers, substantially as hereinbefore described with reference to figures 1, 2 and 3 of the accompanying drawings.
15. A device for helping to prevent the unauthorised reading of personal identification numbers, substantially as hereinbefore described with reference to figure 4 of the accompanying drawings.
16.An apparatus comprising the device as claimed in any one of claims 1 to 12 and claims 14 or 15.
PCT/GB2006/002227 2005-06-17 2006-06-19 A device for helping to prevent the unauthorised readng of personal identification numbers WO2006134389A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB0512356.7 2005-06-17
GBGB0512356.7A GB0512356D0 (en) 2005-06-17 2005-06-17 A device for helping to prevent the unauthorised reading of personal identification numbers

Publications (1)

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WO2006134389A1 true WO2006134389A1 (en) 2006-12-21

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PCT/GB2006/002227 WO2006134389A1 (en) 2005-06-17 2006-06-19 A device for helping to prevent the unauthorised readng of personal identification numbers

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WO (1) WO2006134389A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2450333A (en) * 2007-06-19 2008-12-24 Kevin Bowers Security screen for use when entering a PIN

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0092048A2 (en) * 1982-04-20 1983-10-26 Siemens Nixdorf Informationssysteme Aktiengesellschaft Data input device for an information processor
US4632511A (en) * 1984-03-21 1986-12-30 Louw F S Shield for a keyboard
WO1996024942A1 (en) * 1995-02-10 1996-08-15 Groenbjerg Ib A shield for a magnetic card apparatus
BE1009780A6 (en) * 1995-11-29 1997-08-05 Kabasele Tenday Ndonda Keypad with cover to provide protection when keying in a secret code in a public place
FR2773903A1 (en) * 1998-01-16 1999-07-23 Nicolas Tavernier Security device for a keyboard having keys for input of a security code
US6144319A (en) * 1994-02-25 2000-11-07 International Business Machines Corporation Anti-surveillance device for keyboards
US6543684B1 (en) * 2000-03-28 2003-04-08 Ncr Corporation Transaction terminal with privacy shield for touch-screen pin entry

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0092048A2 (en) * 1982-04-20 1983-10-26 Siemens Nixdorf Informationssysteme Aktiengesellschaft Data input device for an information processor
US4632511A (en) * 1984-03-21 1986-12-30 Louw F S Shield for a keyboard
US6144319A (en) * 1994-02-25 2000-11-07 International Business Machines Corporation Anti-surveillance device for keyboards
WO1996024942A1 (en) * 1995-02-10 1996-08-15 Groenbjerg Ib A shield for a magnetic card apparatus
BE1009780A6 (en) * 1995-11-29 1997-08-05 Kabasele Tenday Ndonda Keypad with cover to provide protection when keying in a secret code in a public place
FR2773903A1 (en) * 1998-01-16 1999-07-23 Nicolas Tavernier Security device for a keyboard having keys for input of a security code
US6543684B1 (en) * 2000-03-28 2003-04-08 Ncr Corporation Transaction terminal with privacy shield for touch-screen pin entry

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2450333A (en) * 2007-06-19 2008-12-24 Kevin Bowers Security screen for use when entering a PIN

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