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Who Is Charging My Phone? Identifying Wireless Chargers via Fingerprinting

2020/07/30 by Zhiyun Wang, Jiayu Zhang, Wang, Zhiyun +9
Computer Science · Engineering · #Cryptography and Security (cs.CR) #FOS: Computer and information sciences #FOS: Electrical engineering #Internet Traffic Analysis and Secure E-voting #RFID technology advancements #Systems and Control (eess.SY) #User Authentication and Security Systems #electronic engineering #information engineering

paper · pdf · doi:10.48550/arxiv.2007.15348

openalex publication_date 2020/07/30 · openalex created_date 2020/08/03 · openalex updated_date 2026/07/28

Abstract

With the increasing popularity of the Internet of Things(IoT) devices, the demand for fast and convenient battery charging services grows rapidly. Wireless charging is a promising technology for such a purpose and its usage has become ubiquitous. However, the close distance between the charger and the device being charged not only makes proximity-based and near field communication attacks possible, but also introduces a new type of vulnerabilities. In this paper, we propose to create fingerprints for wireless chargers based on the intrinsic non-linear distortion effects of the underlying charging circuit. Using such fingerprints, we design the WirelessID system to detect potential short-range malicious wireless charging attacks. WirelessID collects signals in the standby state of the charging process and sends them to a trusted server, which can extract the fingerprint and then identify the charger.

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