Use of a door chain provides a little security when dealing with strangers. A properly installed door chain is resistant to tampering from the outside requiring use of physical force to open the door, which will leave obvious evidence.

Do chains on doors work?

Door chains give you some protection when you need to open the door. … For a small investment, a door chain adds an additional layer of home safety and security. It’s important, though, not to let them give you a false sense of security though. They can’t take the place of quality deadbolts and strong entrance locks.

Do I need a door chain?

Using a door chain provides a bit of security when dealing with strangers. A properly installed quality door chain will be resistant to interference from the outside, requiring physical force to get the door to open, which will leave obvious signs of evidence.