Recently Ive been using nostr-keyx for browser #nostr signing,

GitHub

GitHub - susumuota/nostr-keyx: A NIP-07 browser extension that uses the OS's keychain or YubiKey to protect your private keys.

A NIP-07 browser extension that uses the OS's keychain or YubiKey to protect your private keys. - susumuota/nostr-keyx

“Next i would like to try something thats compatible with mobile phones” @S. Ota Great Job!