Hi Myles,
Since the I15 uses a built-in IS20 eye tracker, a very specific screen setup has to be used, which is not the same as the one assumed by the EyeX software. This means that if you install the EyeX software on an I15 it will be in conflict with the eye tracker specific software that the I15 comes with, giving offsets and undefined behavior in the standard communication software. Because of this, I have to strongly recommend against installing EyeX on an I15 that is to be used for communication. I guess that it would invalidate its medical certification to do so. Disclaimer: As a software developer for Tobii Tech, I have neither the knowledge nor the authority to give advice as to what is or is not valid legally. My suggestions here are based on a software system perspective and what is required for the product to function properly.