Contactless credit and debit cards are only just starting to take off in the USA, but with Apple Pay driving merchants to introduce contactless payment terminals, you are increasingly likely to find that RFID symbol on your bank cards when you receive replacements.

We’ve had contactless cards in Europe for a few years now, and they’re even more convenient than Apple Pay for low-value transactions. For anything up to £30 ($46), you don’t need to verify the transaction in any way: just tap your card against the terminal. You can even do this without taking the card out of your wallet. (Bank guarantees protect you against fraudulent transactions.)

Convenient, that is, unless you have more than one contactless card in your wallet. This can either lead to the wrong card being debited or, more usually, cause the transaction to fail. Truffol has come up with an iPhone 6 wallet case specifically designed to solve this problem …  expand full story