India is building a payment and services network that doesn't require smartphones, along with fingerprint scan and iris scan tech. So you can pay or exchange money using your old Nokia 3310 instead of using a smartphone. All retailers will eventually have a fingerprint scanner or iris scanner. It's much more than Apple Pay or Samsung Pay because you don't need a smartphone.
http://economictimes.indiatimes.com...r-pay-infrastructure/articleshow/57515275.cms
IDFC launches Aadhaar Pay, becomes the first to launch biometric based payment system
The govt has banned cash transactions above 3Lakhs or $4500 from April 1st.
http://www.livemint.com/Politics/x6...-highvalue-cash-transactions-to-hit-spen.html
That's why India's mobile market is spoken about so extensively. Because it will be one of the biggest payment systems in the world.
In fact, the ultimate goal is to remove phones from the payments system. All you need is a finger or an eye.