An already working reimplementation of libfprint in Rust, supposedly easier to use.
Targeted to Chromebooks currently, support wished!
So you use the phones login method and then what? An app uses this and sends a message or key or whatever to the Laptop? Over bluetooth? Or USB? Or Wifi?
That honestly sounds like a lot of struggles, but could work.
KDE connect maybe?
@boredsquirrel over LAN*
It already exists & has many apps for winlol like https://play.google.com/store/apps/details?id=ro.andreimircius.remotefingerauth and already had an app for Linux but it died, got removed from the play store
I will try KDE Connect as soon as my WiFi gets fixed