Suggestion Locking door?

Hi, i just have a suggestion. I had many issues with my citizen when a really strong monster is close to my city. Normally i put a wall of fence with a door around my city but i would like to be able to lock the door to avoid some stupid citizen to get kill when there is a monster on the other side of the fence.

hey there @Haarshini,
the engineer can actually already make an iron door which is lockable :smile:
though thinking about it, it could be nice to have an early game lockable door…