I would like an app on iPhone where you could unlock via FaceID og TouchID your Windows 10 PC remotely.
It's important that it must be able to unlock outside the network where the PC resides.
If there should be a requirement for an application running on Windows 10 PC, then it should make outgoing connection, so no need to change firewall router configuration.
Scenario where this could be used:
Remote streaming games from PC to iPhone. All apps I have seen that remote stream your games can only be run/activated after Windows 10 user is logged on. Here is where remote unlocking or login can give you access to stream or other applications that require PC to be logged in could be a secure, easy and fast way to run application remotely from your PC.