Earlier quoted context omitted.
We just broke the locks on the cages with a screwdriver. Locks only keep honest people honest.
I don't expect good locks to keep people out. I expect good locks to be tamper evident so I know I can't trust my system.
The Lock Picking Lawyer chronicled very nicely a technique for turning a KW1-keyed Kwikset core (extremely common here in the US) into something that is tamper evident. See the YouTube video linked herein.
https://www.youtube.com/watch?v=7JlgKCUqzA0
This kind of thing thwarts covert attack attempts and serves as a good way to trigger an audit on the trust of the asset behind that lock.