This wallet, from ACM (or should that be ACM-E?) boasts a patented design that offers up your chosen card at the push of a button.

We like 'cos it looks like something we thought we'd own in the year 2000, although the pessimistic older us just sees the potential card-eating downside of a major malfunction - especially if you were in the front of a very long queue.

From $40 to $60 dollars depending on whether you need a six or 12 card version.