Patent ID: 8818273

Claim:
A method for wireless communication using an acoustic signal in a system including a first device including a speaker and a second device including a microphone, comprising: generating, by the first device, wireless communication information; converting, by the first device, the wireless communication information to the acoustic signal; transmitting, by the first device, the acoustic signal to the second device using the speaker; receiving, by the second device, the acoustic signal using the microphone; extracting, by the second device, the wireless communication information from the acoustic signal; generating, by the second device, an acknowledgment signal according to the extracted wireless communication information; transmitting, by the second device, the acknowledgment signal to the first device on a wireless communication channel; determining, by the first device, whether the acknowledgement signal is received at the first device from the second device in response to the acoustic signal; gradually increasing a volume of the acoustic signal at the first device, when the acknowledgement signal is not received from the second device; immediately discontinuing transmission of the acoustic signal for preventing a malicious party from intercepting the acoustic signal, when the acknowledgement signal is received from the second device; and conducting wireless communication with the second device on a wireless communication channel.