| 摘要 |
<p>In a transaction approval system (10) in which a transaction limit (30) and a list (42) of the card account numbers of invalid transaction cards are stored in a terminal (16) the terminal (16) also generates and stores lists (44,46) of account numbers which might be invalid and should provoke an on-line request for authorisation. One (44) of the lists generated is of card account numbers where the transaction exceeded the transactions limit (30) and was refused by the central processor (12). The other list (46) generated is of card account numbers where the transaction was approved off-line, so that the next transaction by a card holder whose number is on this list (46) will be automatically referred for on-line approval. <IMAGE></p> |
