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Successful object identification is the primary objective of Radio Frequency Identification (RFID) technology. Yet, a recent major study by Wal-Mart has shown that object detection probability can be as low as 66%. We propose the tagging of objects with multiple tags to address the fundamental issue of object detectability. We show that this strategy(More)
Radio Frequency Identification (RFID) is an increasingly popular technology that uses radio signals for object identification. Tracking and authentication in RFID tags have raised many privacy and security concerns. On the other hand, known privacy and security cryptographic defenses are too hardware-expensive to incorporate into low-cost RFID tags. In this(More)
Privacy and security are two main concerns in Radio Frequency Identification (RFID) systems. We first extend the analysis of the Randomized Tree Walking Algorithm for RFID tag collision avoidance, which is secure against passive adversaries. Then, we devise a new Randomized Pseudo-Random Function (PRF) Tree Walking Algorithm, which is secure against active(More)
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