Comment by morilla_chant

Main author here. Sorry for the slow reply, hadn’t realised this had been reposted.

1. Yes 2. Yes

This works because the laptop with a YubiKey will not be the primary device (this should be your smartphone).

So for backup, rollback etc. You just delete Signal on your laptop and relink the device with your primary device.

Disclaimer: the code is PoC quality.