Some methods for privacy in RFID communication

摘要: For RFID tags to gain general acceptance, they will have offer powerful and flexible privacy mechanisms. After reviewing existing upcoming mechanisms for privacy, we propose that a key aspect of communication with passive tags, namely its required energy transference from an external antenna, may promise when developing We present two proposals such In the first mechanism, analysis received signal by can be used estimate reader distance (and hence trust). show simple metric analogous noise ratio correlates well rough distance. second, antenna is power tiered authentication scheme, in which reveal more information about themselves trusted and/or “energetic” readers.