(19)
(11) EP 0 982 693 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
14.04.2004 Bulletin 2004/16

(43) Date of publication A2:
01.03.2000 Bulletin 2000/09

(21) Application number: 99116600.0

(22) Date of filing: 25.08.1999
(51) International Patent Classification (IPC)7G07F 7/10
(84) Designated Contracting States:
AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE
Designated Extension States:
AL LT LV MK RO SI

(30) Priority: 28.08.1998 DE 19839041

(71) Applicant: International Business Machines Corporation
Armonk, NY 10504 (US)

(72) Inventors:
  • Hamann, Ernst-Michael
    71034 Böblingen (DE)
  • Kaisser, Michael
    71088 Holzgerlingen (DE)

(74) Representative: Teufel, Fritz, Dipl.-Phys. 
IBM Deutschland Informationssysteme GmbH, Patentwesen und Urheberrecht
70548 Stuttgart
70548 Stuttgart (DE)

   


(54) Method to identify user-relevant states of the misoperation counter


(57) The present invention describes a method to identity and display states of the misoperation counter prior to input of a password. The method checks the state of the misoperation counter prior to every new password input. Each scanned state is assigned a defined state, which is signaled visually or acoustically to the user by the chipcard application prior to input of the password. The visual display is preferentially in the form of a traffic light, in which the colors green, amber and red are assigned to a defined state of the misoperation counter. The user of password-protected objects and/or applications is unambiguously informed of the state of the protective device for passwords by means of a clearly presented display. Especially after the card has been lost and then found again, the user can see whether anyone else has attempted to enter a password. Prior to the last chance of entering the correct password the user is clearly warned, and can check the input device again carefully before input.





Search report