It's physical security time, the only time that ain't a crime. Securing the room is done by making it more resistant to physical attacks.
When it was first built, my shed was not the most secure place in the world. I had to buy some things and do some work to make it physically secure.
|LIC topography: secure the room|
|padlock made of cheese||easily unscrewed hinge||brittle windows|
- Window hinges and the door hinges could be unscrewed. I replaced some screws with carriage bolts.
- Windows are two foot glass squares. I screwed clear polystyrene sheet over windows. This is flexible and can resist the odd hammer blow but no more, so I screwed steel straps to reinforce the styrene sheet.
- The shed door latch was secured by a padlock from a christmas cracker. It would give a bolt cutter no problem. I replaced it with a hardened padlock.