Secure transaction systems
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
N/A
Issued Date -
Jul 10, 2003
app pub date -
Oct 15, 2002
filing date -
Dec 17, 1999
priority date (Note) -
Abandoned
status (Latency Note)
Importance
Abstract
A bank card transaction system comprises a first apparatus (10) for use by a card holder and a second apparatus (18) for use by the card issuer. One of these apparatus (e.g. the card holder's apparatus) is arranged for creating an encrypted number, corresponding to at least part of a card number, and the other apparatus is arranged for decrypting the encrypted number upon receipt thereof. The encrypted number is given to the merchant by the card holder, e.g. over the Internet, and is then passed by the merchant to the card issuer for authorisation in the usual way: identifying information is passed over a separate communication link established direct from the card holder to the issuer, to enable the card issuer to decrypt the encrypted card number upon receipt.
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