Near field communication - Wikipedia, the free encyclopedia
I believe Google Wallet uses NFC tags
My first smartphone was a Droid 1. Then I found the Nexus... Galaxy Nexus LTE unlocked & rooted...
AOKP JB build ROM, IMO JB exp Kernel,
Root Apps - Titanium Backup, Root Explorer, SetCPU, ROM Toolbox, Rom Mangler/ClockworkMod, CWMR Touch, Lightflow, SD Maid, Nova Launcher
Here is a link that explains NFC and also has following links to help you with those followup questions you may have. I also put a link to how they can be useful as well. Enjoy.
What is NFC? ? GoToTags Sales & Support
What Is NFC Used For? ? GoToTags Sales & Support