Universal card Wallaby  Mashes Your Credit Cards Into One "Smart" Slab - Technology Review | Payments 2.0 | Scoop.it

Payments startup Wallaby promises to lighten your wallet (in a good way) while beefing up your credit-card rewards points. [...] Essentially, you give Wallaby information about your credit cards, and the company then sends you a new piece of plastic that you carry instead of the other ones. [...] the service [then] uses algorithms to decide which of your underlying cards to use to complete the purchase...