Here are some more things you can do with a NFC.
Sharing a file or picture to another phone which has NFC.
To connect to other devices with NFC like the HD-10, DT-903 DT-903 , headphones etc
You can buy NFC tags which you can "program" so if you tap them then for example an app is started.
For tap to pay but this function still is not useable in many places.