Hack Your Door to Lock and Unlock via Text Message. @hahn: I don't know about all that.
With the right safeguards in place, I think this would be secure enough for my tastes: 1. Ensure it only responds to messages from ones' own phone. How to Design and Create a Clean, Organized Desktop. How-To Geek - Computer Help from your Friendly How-To Geek. Hack a Day.