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http://dx.doi.org/10.9708/jksci.2021.26.07.057

User Visit Certification System using Inaudible Frequency  

Chung, Myoungbeom (Dept. of Faidea, Sungkyul University)
Publication Information
Journal of the Korea Society of Computer and Information / v.26, no.7, 2021 , pp. 57-64 More about this Journal
Abstract
In this paper, we propose and test the efficacy of an easy-to-use user location certification system for public places that relies on frequencies outside the audible range for humans. The inaudible frequencies come in signal frequency between 18-20 kHz and are generated by general audio speaker. After an individual's smart device detects the signal frequency, it sends the frequency value, user's personal ID, and user's location to a system server that certifies the user's visit location currently. The system server then saves a user visit record and categorizes it by individual. To show the usefulness of this proposed system, we developed a user visit certification application for smart devices linked to a system server. We then conducted a user visit certification experiment using the proposed system, with the result showing 99.6% accuracy. For a comparison, we then held a user visit certification experiment using a QR code, which confirmed that our proposed system performs better than QR code location certification. This proposed system can thus provide restaurants and other facilities reliable user contact tracing and electronic visitor access lists in the age of COVID-19.
Keywords
Visit certification; Inaudible frequency; QR code; Electronic access list; User certification;
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Times Cited By KSCI : 1  (Citation Analysis)
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