신개념 모바일 출입인증 보안시스템을 위한 비가청 음파통신에 관한 연구

A Study on Ultrasonic Communication for New Concept Mobile Authentication Security Systems

In this study, we describe the application of ultrasonic communication for mobile authentication. Ultrasonic communication can be utilized in all kinds of embedded systems with a universal-type speaker and a microphone. In addition, it is possible to determine whether users are indoor or outdoor, because the ultrasound signal is rarely transmitted through walls or glass doors. In this report, we propose a protocol and algorithm for ultrasonic communication to facilitate authentication in security systems. Our proposed method does not require direct contact such as in NFC authentication, and it can address a weak point that is missed due to a wide access range such as in BLE authentication.