As credit card surcharges and minimum purchase amounts gradually disappear, contactless payments are becoming more practical for small purchases. As wearables strive to become more fashionable, Bankwest in Australia has launched a Halo smart ring which lets you simply wave your hand to pay for things at the counter. Waterproof to 50 metres, the ring doesn't require charging and isn't dependent on a linked smartphone, meaning there's no danger of a flat battery leaving you in the lurch.
www.smh.com.au/technology/innovation/tap-and-go-smart-ring-makes-contactless-payments-fashionable-20180128-p4yyz3.html