Like, use multiple keys at the same time? No.
You can however designate a next key that you can migrate to in the event that you lose control of your current key.
Is there currently a way to associate multiple public keys to a single user?
cc: nostr:npub1l2vyh47mk2p0qlsku7hg0vn29faehy9hy34ygaclpn66ukqp3afqutajft nostr:npub180cvv07tjdrrgpa0j7j7tmnyl2yr6yr7l8j4s3evf6u64th6gkwsyjh6w6 nostr:npub1zuuajd7u3sx8xu92yav9jwxpr839cs0kc3q6t56vd5u9q033xmhsk6c2uc
Discussion
Yes sir. Like two sim cards registered to one person or having a business account and a personal account registered to the same individual.