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I have had idea to store preferred language and disabled properties in phone by special application. I'm waiting for support bluetooth on my laptop by kernel.

But I have idea, that this could be part of KDE connect, but somebody must extend KDE connect and add support for it to DM.

Firstly is pairing device in network - I think, that DM should display QR code on screen and application should scan it. In next step preferred language and mouse preference + other things would be send to PC, so SSDM will open login screen in preferred language or create a new profile and login in it. Additionally, when phone read QR code and sends information, SDDM can use it (and of course Desktop Environment too).

That could be great idea for internet cafe, libraries, all kind of devices in public places (cash machine, automatic ticket seller, etc.). Only read QR code and device will talk with us in our native language. I don't have time/money/wish to realize this idea, but if you couldn't too, I will realize it in future (maybe).

So if I understand correctly, you want to start a new guest session on the given computer using your phone to provide your personal localization information so that e.g. a german user can start the guest session in german while an italian user can start the guest session (on the same machine) in italian, etc. This is implemented by having SDDM provide a QR code that you'd scan using kdeconnect to initiate the exchange of preferences saved in kdeconnect on the user's phone.

airdrik wrote:So if I understand correctly, you want to start a new guest session on the given computer using your phone to provide your personal localization information so that e.g. a german user can start the guest session in german while an italian user can start the guest session (on the same machine) in italian, etc. This is implemented by having SDDM provide a QR code that you'd scan using kdeconnect to initiate the exchange of preferences saved in kdeconnect on the user's phone.

You are right. Additionally user habits like magnifier, keyboard settings, mouse settings could be imported. That's will be great feature for internet cafe, libraries, etc.