LISNR is an ultrasonic audio technology — a communication protocol that uses inaudible sound, called Smart Tones™, to transmit information.
With any LISNR-enabled software or device: Use LISNR to transmit customizable streams of data every second — enabling proximity engagement with audience measurement, seamless & secure methods of authentication, and device to device data transmission for automation and connectivity.
Audio Frequency Range: ~ 18.7 – 19.5 kHz
Data Transmission: customizable based on use
Detection Time: customizable based on use
Software: C Library base with restful API depending on use