We speak about API "Module Resolution"
it would be nice in case you add "viewport parameter" for "Module resolution" in API
This will be very useful feature for analytics (the share of mobile devices in increasing)
What Is the Viewport? (for example)
We would need to add that to the js tracker aswell, as it currently only reports the resolution.
Another note: While the resolution mostly doesn't change while browsing, it might be more common that the viewport size might change. Saving only one viewport size per visit might thus not be correct.
Paramenter "viewport" for mobile devices (phone + tablets) has 2 options
1.1) "Display resolution" and "view port" It is NOT simple list of "connected" parameters
II) "Display resolution" and "view port" - for example
2.1) for mobile phone ZOPO998, display: 5.5 inches
2.1.1) diplay resolution: 1920 x 1080 pixels (FHD screen)
2.1.2) view port / em / display resolution:
2.2) for tablet: Samsung Glalaxy Note 10,1, display 10,1 inches
2.2.1) display resolution: 1280 x 800 pix
2.2.2) view port / em
III) as example, you can test your mobile phone / tablet and see in "your hands"
not all links provide "real information" for "display resolution" / "viewport"
+1. Google analytics provides similar information (their term is Browser Size).