Most of us have a base out in the wild, and some of us wish we could lock doors, buttons and levers. So, how about we take a thought about this? --Samtheboo
You can already do this... Although if you want it to work, you kinda have to build the whole base out of locked doors... now that sounds like a plan...
That awkward moment when you have to lock the block that the holds the trapdoor, which is also locked.