Abstract: With the rapid development of network and communication technologies, wireless devices authentication has become an indispensable part of information security. In this paper, a novel and lightweight device to device authentication approach is proposed by using the audio transceiver hardware (speaker/microphone) equipped on the mobile devices. Our method has strong universality, reliability and stability, and has low hardware requirements, which can be widely applied to device access scenarios such as wireless access control and near field communication. Additionally, an Android application is developed based on these work. The experimental analysis shows that the protocol has good security and robustness, and the authentication accuracy is over 99%.