First thing that popped into my mind: "let's just fuzz the poor thing over BT and see if we can get it to fail"; the device inside doesn't seem particularly robust, as far as electronics are concerned. Oh, and I wonder what a directed EMP (which is as low-tech as it gets) would do to the lock - fail-open? fail-safe? fail-closed? Who knows...and never mind the circuit breaker box located conveniently outside. No juice - now what happens?