It supports encryption via password or NFC tag. Your keys are encrypted at rest and all backups are AES 256 encrypted. It also supports Android Wear.
Let me know if you have any questions.
Please explain the NFC feature of your app. My HTC phone has NFC, Do I need An external NFC tag to use? Do the Bitcoin ATM's use NFC? Is your apps NFC feature only related to password and not making transactions?