Keepass2Android:
- display passwords, usernames etc. (or the full entry) as a QR code
- scan QR codes to quickly find an entry
- scan QR codes to add the scanned text to your Keepass database.

This plug-in can be used to transfer database entries from one Android device to another, e.g. if you want to securely share credentials with a friend. Therefore, install it on both devices and then:
1.) open the entry you want to share
2.) select "Show QR Code" from the options menu (in the action b