Mashable: This smart ring gives you instant mobile payments with beefed up security

The Token smart ring allows wearers to make mobile payments, unlock doors, and, through the Web Authentication API being developed by the W3C based on FIDO standards, ditch their passwords when logging into online accounts.

http://mashable.com/2017/06/27/token-wearable-ring-authenticator/#w4v4.pTYHqqH/