iameli has a RPi based door unlocker that is non destructive and non intrusive for those who do not want into hack into their existing security/locking mechanism. His solution is s simple replication of human action but using a Rpi to control the tactile action using a servo. If you need a replicate a button pushing action that will unlock your door or lock this project is a great inspiration. This could be particularly interesting for those who live in apartment building which are still rocking antiquated door unlockers.
http://gfycat.com/ifr/DemandingUniqueFlatfish
More details and pictures on the site after the jump …iameli — buttonpusher.