Visa tests NFC-enabled wearables for mobile payments

Payments using near field communication technology have been a promise for a while, but until now no application has been popular or good enough to replace plastic cards. With about 4,000 points of sale equipped with NFC, Visa is using the Rio de Janeiro Olympics to showcase the use of the short-range wireless connectivity standard to allow visitors and athletes to use rings, bracelets and watches to make purchases by tapping them at any NFC-compatible payment terminal.