But here's the thing: where are the trade secrets? Displaying a picture of a credit card on a phone's screen while you send that card's info to the NFC card reader is not exactly hard to come up with on your own.
With all due respect, there's an awful lot more to it than that. There are also the many, many relationships that need to be set up to get a mobile wallet going. This is certainly part of what irritates PayPal.
