[SeanDav]

> "Would they also prosecute a person who told them one of their doors was left unlocked after-hours?"

Perhaps not, but they probably would be tempted to prosecute someone who opened the door with a toothbrush and told them about it...

The temptation is to squash anything that comes along and potentially makes you look like you weren't doing your job properly (installing a better lock in the first place) rather than thank the person and then install a better lock, or fix the design of the lock.