"Experience designers love a bit of Saarinen: “Always design a thing by considering it in its next larger context – a chair in a room, a room in a house, a house in an environment, an environment in a city plan.” That’s what’s wrong here, an RFID card is not considered within the context of a wallet, containing multiple competing RF field creating information and ID objects, and this new, electric wallet isn’t considered within the larger system of shops and the invisible RF world." Companies don't design for seams - and, as Chris points out, when they do, it's for seams between all their own products.