Samsung is launching TecTiles, which are programmable NFC tags that can be programmed (and re-programmed) by a phone like the Galaxy S3. There are many ways to use them, but one cool example that Samsung is going to push is to program TecTiles to trigger actions on a Galaxy S3 phone. For example, a tag placed on your bedside table could trigger the phone's silent mode, shut down 3G/4G and even WIFI to save on battery life. Of course, the phone is smart enough to let select phone calls go through.
A tag placed in a vehicle could also start Bluetooth so that communications with a headset or other hands-free devices can happen.
Ubergizmo, Samsung TecTiles programmable NFC tags for the Galaxy S3
