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Eye tracking is biometric data. It can reliably be used to detect various neurological conditions.

This is about telemetry, not the direct eye tracking data. Also I'm not sure how you could detect various conditions with just what you look at. That seems a little far fetched / not reliable. Even if it could magically diagnose you with a condition what would be the point to do that? To sell you medication? To connect you with others who share your condition? Those things don't mseem to be much to worry about.

Not medical condition, but your state of mind. The goal is to sell others the option to change your mind.

Everybody keeps getting surprised at how seemingly irrelevant data points can be used to segment/profile people with a shockingly high accuracy. It seems the only requirement is scale.

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