Claims
- 1. A method for updating time-limited parameters in offline chip-card terminals,said time-limited parameters being updated with the user chip-cards used in said offline chip-card terminals, when these are used for transactions with said offline chip-card terminals, said time-limited parameters comprising identifications of blocked user chip-cards, wherein at least certain of said time-limited parameters are stored in the user chip-cards in such a way that only authorized chip-card readers can access these parameters but not the user of the chip-card.
- 2. The method of claim 1, at least certain of said time-limited parameters being stored in a memory area of the user chip-card that cannot be accessed by the user.
- 3. The method of claim 1, at least certain of said time-limited parameters being encrypted.
- 4. The method of claim 1, said identifications of blocked user chip-cards being copied only in the user chip-cards that are used in the same geographical area.
- 5. The method of claim 4, said time-limited parameters being copied in said user chip-cards when these are connected for a transaction with online chip-card terminals.
- 6. The method of claim 1, at least certain of said time-limited parameters being copied in said user chip-cards when these are connected with offline chip-card terminals.
- 7. The method of claim 1, said time-limited parameters comprising the scales of charges of said offline chip-card terminals.
- 8. The method of claim 1, said time-limited parameters being linked with a time indication.
- 9. The method of claim 8, said time-limited parameters being linked with a dating stamp.
- 10. The method of claim 1, lists of parameters of performed transactions being copied from said offline chip-card terminals in said user chip-cards.
- 11. The method of claim 1, said time-limited parameters comprising electronic money units that are transmitted in this way between offline chip-card terminals and online chip-card terminals without the user of said user chip-card being able to use them.
- 12. The method of claim 1, other time-limited parameters being copied over said user chip-cards from said offline terminals into said online terminals.
- 13. The method of claim 12, said other time-limited parameters comprising electronic money units.
- 14. A user chip-card that can be connected with offline chip-card terminals for performing transactions and comprising parameters that are meant for updating time-limited parameters in said chip-card terminals,wherein at least certain of said time-limited parameters are stored in the user chip-cards in such a way that only authorized chip-card readers can access these parameters but not the users of the chip-cards.
- 15. The user chip-card of claim 14, at least certain of said parameters being encrypted.
- 16. The user chip-card of claim 14, at least certain of said parameters being stored in a memory area of the user chip-card that the user cannot access.
- 17. The user chip-card of claim 14, said parameters comprising lists of transactions performed with other user chip-cards.
- 18. The user chip-card of claim 14, said parameters comprising lists of blocked user chip-cards that are used in the same geographical area.
- 19. The user chip-card of claim 14, said parameters comprising scales of charges.
- 20. An offline chip-card terminal comprising data processing means in order to determine the types of chip-cards that have to be blocked and in order to store the identification of these user chip-cards in such a way that only authorized chip-card readers can access these parameters but not the user of the chip-card.
- 21. The offline chip-card terminal of claim 20, said identifications being copied only in user chip-cards that are used in the same geographical area.
Parent Case Info
This application is a Continuation of PCT/CH00/00149, filed Mar. 15, 2000.
US Referenced Citations (8)
Foreign Referenced Citations (4)
Number |
Date |
Country |
0 360 613 |
Mar 1990 |
EP |
2 208 955 |
Apr 1989 |
GB |
WO 97 36265 |
Oct 1997 |
WO |
WO 00 21044 |
Apr 2000 |
WO |
Continuations (1)
|
Number |
Date |
Country |
Parent |
PCT/CH00/00149 |
Mar 2000 |
US |
Child |
10/238541 |
|
US |