Background scanning of NFC tags
When a database with an NFC barcode field is open in the Android app, the app should continuously scan for NFC tags in the background (or this might be an option to activate). And when a tag is found the app should automatically show the corresponding entry in the database (without having to select the bar-code scanning function each time).
In addition, when linking an NFC tag to a database entry, there could be an option to write in the tag an entry that, when read by an Android phone would trigger an Android intent to open the Memento app to the correct database and item.
These two features would really make the NFC support in Memento be first-class.