Hotel door hacking - By Barry Wels

Funny, I have been doing this for years at my parents' home using the intercom cable, however the guy suggests a universal way to open those locks.

I think that the video deservers our attention.

Taken from https://www.youtube.com/watch?v=7INIRLe7x0Y

And remember: It is not that I am paranoid - people just try to harm me all the time.

Thanks to Avi Douglen for sharing this.