Efficient Target Tag Information Collection in Commodity RFID Systems

With the proliferation of RFID-enabled applications, large-scale RFID systems containing numerous tags are becoming increasingly common. Efficient management of these systems requires the ability to quickly collect information from specific subsets of tags, known as target tags. However, existing works often rely on hardware modifications, limiting their applicability to commercial RFID systems. To address this, this paper proposes the Target Tag Information Collection (TTIC) protocol and its enhanced version E-TTIC, both designed for efficient target tag collection using off-the-shelf RFID devices. TTIC leverages the Cuckoo filter to eliminate non-target tags and accurately collect target tags. It first inserts all target tags into the Cuckoo filter and then designs select commands compatible with commercial RFID readers to identify target tags while silencing non-target tags. On top of TTIC, E-TTIC further reduces the collection time by designing a novel Cuckoo filter that requires fewer select commands. We implement our protocols in a commodity RFID system. Extensive experiments show that E-TTIC can improve time efficiency by up to 80 % compared to the baseline.