I hope this is real, I get that its probably expensive and niche, but it still looks like it could be super cool especially with XOR creativity. They started out with a no-ne air gapped phone controlling it and now are playing with seed signer. Hope they get on Nostr soon:

The SeedHammer machine hammering a plate. Solely controlled by an air gapped @seedsigner running SeedHammer software (will be public domain).