RF-DNA

• DOI: 10.1145/3495243.3517028
• Publication Date: 2022-10-14T15:38:33Z
• Authors: Qingrui Pan; Zhenlin An; Xueyuan Yang; Xiaopeng Zhao; Lei Yang
• Keywords: 0202 electrical engineering, electronic engineering, information engineering; 02 engineering and technology

Physical-layer identification aims to identify wireless devices during RF communication by exploiting the imperfections of their radio circuitry, i.e., hardware fingerprint. Previous work proposed several fingerprints for RFIDs (e.g., TIE, ABD, PSD, etc). However, these suffer from either unscalability or acquisition inefficiency. This presents RF-DNA, a new fingerprint composed millions Dual Natural Attributes (DNA) organized in helical structure, where pair DNA represents tag's intrinsic response at some frequency. We take advantage frequency agnostic phenomenon that commercial RFID tag can respond within wider band than regulated, acquire 10X more features previous fingerprints. At heart this are context-free approach extracting backscatter signals; and accurate matching algorithm verifying identity. A total 160,000 RF-DNA instances were collected 16,000 tags using customized automatic system. subsequently carried out large-scale experiments test accuracy previously Our comprehensive evaluation reveals achieve mean 95.98%. In contrast, those fall 60% below when face thousands tags.