Cursor amongst different devices

Currently, the cursor is calculated on the screen percentage, which should translate into a smooth experience across devices (desktop, tablets). So there isn't a concern there, since calculations are being made on the client's side viewport and sending it over to Phoenix's server.

A few questions arise, though:
- is this feature redundant in mobile devices? People using touch screens will just tap and the scroller will just show randomly on the desktop view.
- what happens if the page is scrollable? How will tracking occur here? (calculations will be different)

Just wanted to open this out there =)