EP 0298831 B1 19911016 - ANTI-FRAUD DEVICE AND METHOD FOR A SELECTIVE ACCESS SYSTEM
Title (en)
ANTI-FRAUD DEVICE AND METHOD FOR A SELECTIVE ACCESS SYSTEM
Publication
Application
Priority
FR 8709604 A 19870707
Abstract (en)
[origin: EP0298831A1] Method and device for protecting a selective-access system against a fraudulent use of a magnetic card with a confidential code. <??>Each card (CM) is assigned a class corresponding to a zone of a memory (PROM). The number of classes is equal to the number of zones and is substantially smaller than the number of cards (CM) liable to be presented. <??>At each failure to enter a confidential code, a bit is modified in the appropriate memory zone. <IMAGE>
IPC 1-7
IPC 8 full level
G07D 9/00 (2006.01); B42D 15/10 (2006.01); G06K 17/00 (2006.01); G06K 19/10 (2006.01); G07F 7/10 (2006.01); G07F 7/12 (2006.01)
CPC (source: EP US)
G07F 7/10 (2013.01 - EP US); G07F 7/1083 (2013.01 - EP US)
Designated contracting state (EPC)
BE CH DE ES FR GB IT LI NL SE
DOCDB simple family (publication)
EP 0298831 A1 19890111; EP 0298831 B1 19911016; DE 3865555 D1 19911121; ES 2029336 T3 19920801; FR 2618000 A1 19890113; FR 2618000 B1 19891103; JP H0198095 A 19890417; US 5006698 A 19910409
DOCDB simple family (application)
EP 88401646 A 19880628; DE 3865555 T 19880628; ES 88401646 T 19880628; FR 8709604 A 19870707; JP 16997488 A 19880707; US 21595988 A 19880707