The inside of the doors on our main storage area
Tie-down rings, bolted through the doors, with chain and padlock. We'll keep it locked from the inside from now on; opening it only for taking in large deliveries.
Not to shabby on the outside, either. Those four round heads are the bolts anchoring the tie-down rings. The anti-tamper plate over the latch didn't do a bit of good -- the would-be crook just bent it backward to get at the latch.