No, Amber works locally for a single user, I need it to be remote signing for many users.
Discussion
I vaguely remember someone building a USB-based remote signing bunker...jeez I wish I could remember who because now I want one.
https://github.com/blackcoffeexbt/hardware-nostr-connect-device
We're selling them on the LNbits shop but not quite ready to ship yet. Very soon.