>And active key zeroation if it thinks you're trying to drill through the epoxy surrounding the crypto boundary. Or passive! Probably it wasn't a real product

>And active key zeroation if it thinks you're trying to drill through the epoxy surrounding the crypto boundary. Or passive! Probably it wasn't a real product but I recall reading about one that derived its key from the field generated by randomly arranged magnetic particles in the resin, or something like that. The point was to make it impossible to disturb the resin without altering the key.