Last week, we were given a sneak peak at Halo: a new contactless payment system from Bankwest that puts your banking details into a ring. Boasting batteryless, app-free operation and waterproofing up to 50 metres, it's the first "IoT wearable" concept that I'm actually exited about.

It's also one of the cheapest wearables on the market, with an introductory price of $29. Here's what you need to know!