Authorization using Wi-Fi (PAM)?

Question

linux

The idea is to log in to the system if there is a smartphone within the range of Wi-Fi and lock the screen if the smartphone is out of range of Wi-Fi. For PAM, I found only authorization using Bluetooth and Flash drives. I also came across such a thing, but I'm not sure if this is exactly what I need, plus I have Cinnamon.
Anyone set it up? Post links to manuals.

Answer 1

No way. Wifi was not designed for this. The reason is that the workstation, on which the screen is supposed to be blocked, should not distribute Wi-Fi. Why hasn't this been hacked yet? I can name many reasons, at least for example wifi - multiple access, unlike bluetooth point-to-point. If someone else connect, block the screen? Or if someone else connects with your mac address? Or, my God, someone will create a hotspot with the same ssid as your computer, while the client will connect to it, and not to your computer. Or the wifi network periodically changes in the phone - what should happen in this case?
If you still want to hack, you can, for example, in the same hostapd, hang a hook to connect a specific device (mac?) and unlock the screen. This is done, but I did not check the correctness of the work.
And of course, no one canceled the opportunity to slightly tweak the card driver itself)