To pay with your phone, some banks were issuing little NFC stickers that people put on their phonecases. It worked perfectly. Android Pay could have been a really great thing - had it launched 5 years ago.
The sticker is always exposed, works with one account only, and doesn't even require authentication. With the app, I can select which account to use, see how much money I have on it, then authorize with pin and pay. I know some people may prefer the sticker only, but I find the app much better.
Tokenized app send one time credit card number.
http://www.planetbiometrics.com/creo_files/upload/article-fi...
http://arstechnica.com/business/2015/05/android-pay-will-emb...
http://www.telegraph.co.uk/finance/newsbysector/retailandcon...
Only in the United States. In mainland Europe NFC has always used EMV authentication between terminal. Also as an aside: a european credit card's number alone is kinda useless.
https://twitter.com/edent/status/724639270284189696
True, it didn't have the CV2(?) number on the back - or my address - but enough to make me buy an NFC shielded wallet.
If your card speaks MSD over NFC then it will provide that information. That's up for your bank. My cards not do it and as such I cannot use NFC in many places in the US.
My phone is normally in my hand anyway so using it is much more convenient. The only problem is it's takes 1/2 a second longer, and you don't want to look like an idiot trying to use your phone in rush hour.
I wish there was a quick way to launch it when the phone was open as sometimes double tap doesn't work and you open the phone, then you have to lock it again, double tap, touchID. I would use my watch, but then you have to look like more of an idiot rotating your arm and leaning over to the reader.