When choosing a security system for the office, Billy Chasen decided to ditch the traditional lock & key barricade for something a little more 21st century. He hacked together a device that uses a web server, servo motor and some parts from Home Depot to enable locking & unlocking via text message. Chasen maintains a list which gives access to green lit office workers, who enter by simply texting "lock" or "unlock"... and voilà, open sesame.
The WonderHowTo office needs this. Now.
For the ambitious, Chasen has made the code available here.