For coldcard: https://coldcard.com/docs/trick-pins/
Discussion
I bet it does work with other hardware wallets too?
It may? I don't know on a hww basis. Unless you're spending/sending btc often though there's no need to have your seed loaded on a signing device all the time so long as you have your key backed up in physical medium like steel.
True, so a coldcard would be a good option for this? Or a nostr:npub17tyke9lkgxd98ruyeul6wt3pj3s9uxzgp9hxu5tsenjmweue6sqq4y3mgl ?
Either are great products do generate a key pair in an airgapped fashion. There are tradeoffs. Seedsigner asks you to do a bit more work, and the cold card can be a fairly technical interface but there are guides for both.