TIP 4 - Chain Locks are NOT recommended

5:54p.m., Wednesday, September 12, 2018

Opening a door slightly while it is secured by a chain lock is a sub-optimal level of security. In this situation, occupants are at a greater risk of a criminal kick-entry attempt. A well installed slide-bolt mechanism in combination with your regular door handle lock is considerably more resilient.

If you prefer to see who's at the door each time and you don't have line-of-sight through a nearby window, install a peephole that allows you to look out but doesn't allow the visitor to see inside.