| 摘要 |
A transaction or authorization card, such as a credit card, check guarantee card or identification card, includes self-contained devices for verifying that the holder of the card is the owner or authorized user of the card. The verification is made by way of the card itself without any peripheral apparatus such as reader. The card contains data input, memory, analyzer and indicator devices which are all built into and contained integrally in the card. The analyzer is capable of determining whether or not input data corresponds to coded data held in the memory. If the input data does correspond to the coded data, a visual indication of such acceptable status is given by the indicator. If the input data does not correspond to the coded data, a visual indication is given that any transaction involving the card by that card holder should be rejected.
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