It is why Evva chose somarium cobalt, due to it being harder to de-magnetise. This is the best mechanical lock on the planet.

I love the MCS, but they are not super difficult to brute-force sadly.

Their main security feature is that keys were "impossible" to duplicate. However the SSDev'ers were able to decode and build make-up keys on-the-fly several years ago now. But that still leaves picking the lock a challenge which has not yet been a public development.

By brute force you mean destroy, right? I've simulated keys with much less that what the SSDev guys used. They can be opened without the key, sure.