"Amitabh Kant said that even electronic payment methods may be "totally redundant" by 2020. Instead, all Indians will need for transactions is their thumb or eye.
"Each one of us in India will be a walking ATM," Kant said at the World Economic Forum in Davos. That would represent "the biggest technological leapfrogging ever in the history of mankind," he added.
... nearly 1.1 billion of India's 1.3 billion people have already registered their biometric data under the government's unique identification program.
The Indian government is testing a payments app that makes use of that biometric data, coupled with portable fingerprint scanners that cost about 2,000 rupees ($30) each."