I don't think it's possible unless you add an app. One solution would be create a companion app that determines the physical screen size, then makes that avail

I don't think it's possible unless you add an app. One solution would be create a companion app that determines the physical screen size, then makes that available to your network via web sockets. There our a few steps I left out here but it's possible. The app could be optional - if its installed that device will have fully automatic configuration. If it's not installed, you just fall back to your user prompt.