A hand with an Apple Watch activates a Level Lock Plus on a wood door.

Door Lock Ratings Protect your home and family with the best door lock or smart lock. Some door locks offer extra security with deadbolt and spring-bolt reinforcement technology.

Resistance to kick-in as sold is how well the lock survived increasingly forceful impacts using the hardware it comes with. Kick-in reinforced is the same test using an aftermarket Box Strike in ...