Hi @jhcover, thanks for reaching out. You will be pleased to know that Tobii already provide and out of the box solution for streaming user gate over the internet in real time to a receiving system.
Unfortunately, the software does not support an enlaring of the area of focus and indeed that would something continually in flux, so not an ideal solution.
Please check out Tobii Ghost @ https://gaming.tobii.com/software/ghost/ and let us know if it meets your needs. Please bear in mind that for the time being, Tobii Ghost supports only the Tobii Tech range of eye trackers such as the ET5 and 4C. Best Wishes.