Thanks for the feedback. Right now it is not possible to get access to the raw camera image due to optimization reasons. With the Eye Detection Indicator (the rectangle with the two dots representing your eyes) included in the EyeX Engine you can see some information about where your eyes are in the tracking box.
We have some ideas on how to include even more diagnostic and debugging tools in the EyeX Engine, so please keep sending us input on what you need and we’ll consider your feedback when planning the upcoming releases.