ToneTag helps Amazon app customers to shop offline

Amazon customers will be able to make offline payments in stores using the e-commerce giant’s app with the support of proximity payments company ToneTag’s sound wave technology. This creates a communication between the phone and the point of sale using existing infrastructure without the customer having to queue up or be near the counter.

ToneTag, founded by former Infosys employee Kumar Abhishek with Vivek Kumar Singh, has Amazon and Mastercard among its investors and has raised close to $10 million so far.