Non-contact type safety card
Patent Information
- Authority / Receiving Office
- CN · China
- Current Assignee / Owner
- 商庆海
- Publication Date
- 2003-04-30
- Estimated Expiration
- Not applicable · inactive patent
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Abstract
Description
(1) Technical field
[0001] The invention relates to an IC card, in particular to a non-contact induction security card. (2) Technical background
[0002] Along with the extensive application of IC card, the safety assurance problem of information in the IC card appears all the more important, it is non-contact induction card (also claiming radio frequency card) by it. When working, the card and the card reading device are not in contact, and the exchange of information is realized by electromagnetic waves, so all the information exchanged is also open and transparent in space separated by objects. In addition, this kind of card starts to work by the same electromagnetic wave. Other control switches, although some manufacturers have added some encryption algorithms and other measures when reading and writing data in the card, making it difficult for cardholders to illegally read and write data in the card, but for non-cardholders and cardholders Without knowing it, at a cert...