Need to make a key from the lock? Theres an App to help you out

Keysforge, appartently it will take a picture of the front of the lock and make a blank of the key for you (you then need to cut it down to size).  Pretty neat.

http://www.theregister.co.uk/2016/01/18/keysforge_will_give_you_printable_key_blueprints_using_a_photo_of_a_lock/

https://keysforge.com/