Why foil on doorknob?

[Sophier]

One of my friend said you should put foil on your doorknob for security, why?

[Guy13]

can't slide a needle of one of those thin keys. And, it is difficult to turn and usually makes noise. It does not stop anything but serves as a preventive measure. Camera is better !!!

[Guy13]

Do you have reason to be concerned as it relates to security and peaceable enjoyment in your rental?

[ElementoP]

Maybe so you can hear someone taking off the foil if they try to pick the lock?

I don't know actually. That's pretty dumb. A door stop would be better

[D_Bone_Steak]

It's time to consider that some of your friends might, maybe, just maybe, be a little bit retarded.

[NamerOfStars]

So telepathic spies can't read your doorknob's mind, of course!

[call_me_scar]

Because no one wants to rob the house of s crazy person

[call_me_scar]

Of a*

[Anonymous]

Is it something to do with the governments mind control lasers?

[In_Trance]

I mean... most people just put a lock on, but whatever

[ArtemisSilver]

LoL do they have a foil hat also?