For extra security install one near the bottom of the door as well attach with screws sunk into the door.
How to install high security door lock.
Look into keyed entry door knobs also called privacy knobs portable door locks or top of door locks.
High security door locks will have hardened steel bolts that withstand bludgeoning attacks kicks battering rams sledge hammers shoulder strikes etc used against the door.
Their counterparts the doorknob locks should also be able to withstand 800 000 cycles 6 strikes against the door and a weight test of 360 pounds.
If you re in a situation where you cannot or do not want to use a drill to install your lock there are a couple ways of installing an interior door lock without a drill.
High security lock pin installation locks bump key bumping pick picking locksmith keys.
These locks should ideally be deadbolt locks because they are a much better security option.
Grade 1 deadbolt locks should be able to withstand 250 000 cycles and 10 strikes against the door.
Raise the last piece into which the bolt inserts to the same height on the door jamb.