From a talk board...Samung Galaxy Note 2. FYI- if you see a icon on upper right of your screen that looks like a “N” on top of another “N” that means you have your NFC/S-Beam on. If you turn it off it will go away.
Switched off - it says you can also use it if you want to transfer data just by touching another phone with the same set-up. At least I know what it is now!