发明名称 |
Radio Identification With an Additional Close-Range Check |
摘要 |
The invention relates to a method and a system for radio identification with an additional close-range check, which prevent misuse of a radio identification system and increase the security of radio identification. In particular, so-called relay attacks are to be largely prevented in passive entry systems. The method according to the invention firstly provides for activation of a transponder (S 1 ) for reading of its data. After this step, an additional close-range status signal is provided (S 2 ) which indicates the close range of a reader. Once the close-range status signal has been detected by a transponder (S 3 ), data transmission for reading of the data stored in the transponder by the reader is possibly enabled in reaction to the detection of the close-range status signal (S 4 ) and the data can be read by the reader for identification of the transponder (S 5 ). The system according to the invention for radio identification with an additional close-range check consists of a reader for reading the data stored in a transponder and of an evaluation unit which is connected to the reader for identifying the transponder on the basis of the read data.
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申请公布号 |
US2008157929(A1) |
申请公布日期 |
2008.07.03 |
申请号 |
US20050629717 |
申请日期 |
2005.06.10 |
申请人 |
KONINKLIJKE PHILIPS ELECTRONICS N.V. |
发明人 |
HILGERS ACHIM;PELZER HEIKO |
分类号 |
H04Q5/22;B60R25/04;B60R25/10;B60R25/102;B60R25/24;G06K7/00;G06K19/07;G07C9/00 |
主分类号 |
H04Q5/22 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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