| 摘要 |
<p>An RFID reader module (110) is associated via a data link (128) with a tag module (112) such that when the reader module (110) transmits an interrogation signal the tag module (112) responds with a random, or constrained random, information signal. The information signal masks a signal transmitted by an RFID tag (102) which the reader module (110) is interrogating, making fraudulently obtaining details contained in the tag transmission more difficult.</p> |
