O2 wallet visa cards have just finished up with a successful test of ‘near field communications’. It's the technology preferred in Visa Pay wave cards or Oyster cards, cards that let you into your block of flats, and all sorts of things. A similar sort of thing to the Barclaycard One Pulse card, but they want to put it into your phone so you don't have to carry around a physical card.
Technology used
Well, O2 wallets have gave 500 people a Nokia 6131 with the technology inside and asked them to use it exclusively for six months.