Also written by Sarah Perez:
The mobile app gold rush may be over
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Lisnr’s data-over-audio technology aims to replace QR code scanning, NFC


A startup called Lisnr wants to replace NFC and QR codes with a new technology that sends data over audio — a communication protocol it’s calling Smart Tone. The technology it’s invented can be used across a number of applications, including point-of-sale transactions, ticketing and authentication, offline messaging, device to device connectivity and more.