Corpus ID: 220935976

BatNet: Data transmission between smartphones over ultrasound

  title={BatNet: Data transmission between smartphones over ultrasound},
  author={Almos Zarandy and Ilia Shumailov and Ross Anderson},
In this paper, we present BatNet, a data transmission mechanism using ultrasound signals over the built-in speakers and microphones of smartphones. Using phase shift keying with an 8-point constellation and frequencies between 20--24kHz, it can transmit data at over 600bit/s up to 6m. The target application is a censorship-resistant mesh network. We also evaluated it for Covid contact tracing but concluded that in this application ultrasonic communications do not appear to offer enough… Expand


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