Reg Hardware

Post: @Paul

kerlmann

@Paul 

In Orange and Barclaycard partner on touchless pay-by-phone tech

This is NFC = Near Field Communications technology, essentially the same priniciple by which Oyster cards work (i.e. no battery!). In other words, it should work OK even on a flat phone - you would probably need power to be able to upload money to the e-Wallet though.