BACKSCATTER LIMITED TAGS
Methods and apparatuses for secure communications of confidential informa tion are provided. In an embodiment, a method of communicating with a popula tion of radio frequency identification tags includes transmitting a first in terrogation signal, receiving a response to the first interrogation sign...
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Format: | Patent |
Sprache: | eng ; fre |
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Zusammenfassung: | Methods and apparatuses for secure communications of confidential informa tion are provided. In an embodiment, a method of communicating with a popula tion of radio frequency identification tags includes transmitting a first in terrogation signal, receiving a response to the first interrogation signal f rom at least one RFID tag at a first received signal strength including at l east a portion of a first identification code, and transmitting a second int errogation signal that includes a request for confidential information, a co mmand to transmit a response to the second interrogation signal at a secure power level, and the first identification code. In another embodiment, a met hod for communicating with an RFID tag includes receiving an interrogation s ignal that includes a request for confidential information and transmitting a response to the interrogation signal at a secure power level. The response includes the confidential information. |
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