I am buying a house that was built in 1967 and still has the original sliding door opening onto the back deck. This door's latch is missing. It does not lock. The last owner of the house didn't care (it is a very low crime neighborhood; he never locked the front door either).
I need a short term solution to this, while I am moving in. In a few weeks I will replace the door entirely.
One obvious idea is to install a "charlie bar". But it is not possible on this door, because the glass pane that slides is on the outside of the glass pane that is fixed. This is a terrible design flaw in the door. If I installed a charlie bar, it would be lockable/unlockable from the back deck, not from inside the house.
What are some other possible ways to secure this door?