It was quite anti-climactic, really. Turns out there aren't really any good applications for it, except for the 'fun' things like the 'hidden vault' I mentioned. It's quite an undertaking though to make something like that production quality. For example you need a way to unlock the vault even when there's no power. It would probably require some hidden mechanical mechanism that is actuated by a certain series of events. Like most experiments, I mostly lost direct interest after the proof of concept worked. Still if I ever have a proper workshop and a few weeks, or if I ever build a new house for myself, it would be nice...