On: Lockitron: Keyless entry using your phone

[tedunangst]

While I have seen people walking around and trying doors, it's rare and it attracts a lot of attention. There's something of a herd immunity effect from door locking. As long as most doors are locked, a couple unlocked doors don't matter.

http://www.nytimes.com/2010/01/14/garden/14nolock.html?_r=0