TagsForCells 1 NFC Keychain (Mifare 1K, NDEF Formatted)
You get 1 NFC Enabled Keychain with the  Mifare 1K NFC Chip in it.  So what can you do with the NFC Keychain from TagsforCells for your NFC Phone?  Well here are some uses forit: Turn your Wifi/Bluetooth  On/Off, Ringer and/or Vibrate On/Off, Run an Application Automatically, Send a Text Message when you are leaving work to someone, Set an Alarm when you go to bed, Startup your tunes when you get into your car etc..  Don't buy the Expensive Samsung Tectiles, as TagsForCells NFC Tags have the same technology, thus they are can replace Tectiles, and are compatible with almost all NFC Tag Apps on your phone, including the Tectiles App.    Due to technical limitations on the Nexus 4 phone and Nexus 10 tablet, these tags  have limited capability with them, some Android Apps may be able to read the UID on each tag and can create a command that can be stored on a cloud server that can be accessed once the tag is read by these phone types (thus limited capability with them).