Transmit data using audio signals.
This application enables the user to transmit data between air-gapped devices using audio.
It uses a simple MODEM algorithm to enable the user to send and receive short data messages (up to 250 bytes, within up to 3 seconds) between nearby phones or computers, utilizing the sender's speaker and the receiver's microphone.
Please use GitHub (https://github.com/romanz/audiomodem-android/issues) to report any issue you have with the application.
You can also use the following Python implementation (https://github.com/romanz/amodem) to communicate with a computer.
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