Now that Nokia's gone all-in with NFC and announced that it'll be blanketing its entire smartphone line with the technology next year, it's gotta do something cool with it -- after all, simply turning a phone into a digital wallet is so 2009! That seems to be where Swipe comes into play, a new software stack Espoo is teasing this week that integrates NFC payments with instant digital receipt uploads to your phone -- instead of getting a printed copy -- which b