That's it -- no more business cards for me at Mobile World Congress. Googler Trevor Johns has coded up (and open-sourced) a little app called, appropriately enough, Badge Scanner, which will properly read the NFC chip inside the MWC badge and display it on your phone. You then can add a note and save the contact information. Begone, paper business cards!
Do note that if you use this, it'll give up your registered phone number as well. (I've blurred mine out above.) It's not that we don't love getting calls from all you PR reps out there, of course -- we just know how squeamish everyone is with their personal information these days.
If you're here in Barcelona and want to give this a go, we've got download links after the break.