Contact Owner is an Android app that displays your (or a friend’s) contact information on the “lock screen” of your Android device, so that if you happen to lose it the finder knows how to contact you.

Select yourself (or your friend) from your list of contacts, then select which information you want shown and (optionally) customize your message. Contact Owner is a “fire and forget” tool: once you set it up the contact information will keep being displayed even after you restart your device as long as the application is installed.