US 11,948,031 B2
Method and device for authenticating passive RFID tag
Jia Liu, Nanjing (CN); Lijun Chen, Nanjing (CN); Dong Jiang, Nanjing (CN); and Xingyu Chen, Nanjing (CN)
Assigned to NANJING UNIVERSITY, Jiangsu (CN); and JIANGSU TOOKER ROBOTICS CO., LTD., Jiangsu (CN)
Appl. No. 17/787,482
Filed by NANJING UNIVERSITY, Nanjing (CN); and JIANGSU TOOKER ROBOTICS CO., LTD., Suzhou (CN)
PCT Filed Feb. 22, 2020, PCT No. PCT/CN2020/076307
§ 371(c)(1), (2) Date Jun. 20, 2022,
PCT Pub. No. WO2021/164039, PCT Pub. Date Aug. 26, 2021.
Prior Publication US 2023/0051005 A1, Feb. 16, 2023
Int. Cl. G06K 19/07 (2006.01); H04L 9/32 (2006.01)
CPC G06K 19/0723 (2013.01) [H04L 9/32 (2013.01); H04L 2209/805 (2013.01)] 12 Claims
OG exemplary drawing
 
1. A method for authenticating passive RFID (radio frequency identification) tags, characterized in that the method comprises the following steps:
acquiring a tag fingerprint of the first tag as the first tag fingerprint, where the first tag is the genuine tag;
acquiring a tag fingerprint of the second tag as the second tag fingerprint, where the second tag is the tag to be authenticated; and
comparing the first tag fingerprint with the second tag fingerprint: if the first tag fingerprint is consistent with the second tag fingerprint, determining that the second tag is a genuine tag, otherwise determining that the second tag is a forged tag;
wherein the first tag fingerprint and the second tag fingerprint are power-off maintenance time enabling the passive RFID tags to operate normally during the discharging phase after fully charging.