Make NSDs not NFTs
https://lnbits.github.io/nostr-signing-device/installer/

good one - an u fix ur LUD16 pls need to be like this 1xd5fc5e36e44074ca@ln.tips
bitcoinekasi@ln.tips
#[0]β doesnβt miss
#[1]
How does this work? Does it have to be plugged in at all times? How about mobile?
Yes, plugged in while signing. Should be possible on mobile, not tried. Give it a whirl
LFG!