Hi Ryan (@srart)
For the time being, I am afraid we do not intent to introduce support for Linux in the EyeX Tracker.
In terms of window focus, that is not something that is ready ‘out of the box’ but no doubt may be programmed
using the EyeX SDK (within Microsoft Windows)
If you really require an eye tracker for use in a Linux environment, then I would encourage you to look at the
Tobii Pro range of eye tracker such as X3-120 which do indeed include support for this operating system.