Near Field Communication (NFC) allows the transfer of data between devices that are a few centimeters apart, typically back-to-back.
NFC must be turned on for NFC-based apps (e.g., Android Beam) to function correctly.
NFC may not function properly with the use of a third party-battery. To ensure functionality, only utilize the Samsung designed battery with Near Field Communication printed on the battery label.
Check out this interactive demo for more info.