[asterisk-users] Magnetic door locks

[Steve Prior]

Paul Hales wrote:
> I remember driving past a building with a magnetic door lock (where a 
> friend worked) late one night, and he noticed that their door was open 
> and swinging in the breeze. Turns out that if you lost power, this 
> particular door would open up as well.
> 
> PaulH

Heck, that was the whole premise behind the bad guys opening the vault in the 
first Die Hard movie - get the feds to cut the power...

Steve