no the way I see it is it plugs into your own phone and the customer sticks the card in, I would spend £20 just to see the skint ones flap when you say no problem no cash you pay everything by card blah blah, here is a card reader just go get your card and then listen to the new excuses for not paying, card is knackered etc
Not for visa it doesnt! with visa you send a text to your customers phone number then they go online and pay the amount, which to me looks a bit unprofessional and if they don't have a smart phone well they cant pay

apart from that the others i think is just swipe and pay its simply because its not a chip and pin service you sign on the screen of the phone, so visa wont don't want anything to do with it unless the customer confirms on there phone and details.
shame really.. there is a few out there that provide you with a chip and pin machine that connects directly to your phone via blue tooth and into the app software and carries the payment. pay yours.co.uk is one of these