On the right hand of your bicycle page, you will see the QR-Code. You can print the QR-Code as a sticker for your bike.
So when someone will find your bike, it is possible to catch the matrix (QR-Code) with the camera of a mobile device and get in touch with you over the private messaging system at your bikepage.
How it works:
Here is a list of supported mobile phones:
http://www.beetagg.com/supportedphones/
Mobile Tag App by:
http://www.mobiletag.com/
Load App from the AppStore, it's free!
Screenshots:
