LATCH LOCK
Latch locks use a spring-loaded or sliding bolt that automatically catches a strike plate in the door frame to keep doors closed, offering convenience and basic security for interior doors, cabinets, or gates, but requiring a key or handle turn to retract the bolt for opening from the outside, unlike a deadbolt which needs deliberate action to lock. Usage involves simply closing the door to engage the latch (for basic closure) or turning a handle/key to retract it, with variations like sliding bolts for bathrooms or cam latches for cabinets.