Indian bank offers sound-based contactless payments

India’s Yes Bank is to integrate ToneTag’s sound-based contactless payments system into its Yes Pay mobile wallet, The Economic Times reports. ToneTag uses sound waves instead of NFC to connect a smartphone, that has a mobile wallet app installed, with a POS device, allowing owners to make contactless payments. “We are bullish about our alliance as we continue to strive in making payments seamless for end users,” says Ritesh Pai from Yes Bank.