Secret Shelf latch

I created this magnetic latch so that the shelf does not open when someone inspects it or touches it out of curiosity.

This latch requires 2 5x3mm neodymium magnets. You get a hundred or so for a dollar or two.
I just used super glue to attach this to the inside of the shelf and also for the magnet which goes on the inside of the shelf cover. I think it's strong enough but you can be creative and use whatever form of adhesive you like.

Rotate it so that where you insert the magnet is on top, print with supports.