nostr:npub1az9xj85cmxv8e9j9y80lvqp97crsqdu2fpu3srwthd99qfu9qsgstam8y8 for a non-travel coldcard it could be handy to have one pin for duress (when you need to type the number) and one to trigger an explosion (when the bad the bad guy is typing).

But I suppose customs wouldn't like that. And ordering that component separately might also invite the wrong kind of attention.