[jwallaceparker]

Sounds interesting. But also a bit risky compared to a credit card, which to me isn't a hassle to use.

And does it offer reward points?

If not I'll stick with plastic.

[JonWood]

Presumably it's still backed by a card of some form, unless Square are picking up the tab for anyone using card case, so you'll get reward points when the transaction gets processed by Square.