Hopefully a feature in SeedSigner or [ColdCard](https://twitter.com/COLDCARDwallet/status/1608886079159160834) could be added for signing events as well using NFC/microSD/USB connection for signing individual events, a permasigned event for some time limit or permanently until revoked using the hardware wallet again.

This could be used along with a BIP-85 deterministic entropy dervied child seeds from a master seed, to maintain multiple Nostr profiles.