From a contracting notice recently posted by the Social Security Administration:
The Social Security Administration (SSA) is seeking a commercial off-the-shelf (COTS) eyetracker software tool that will allow SSA to measure and collect users' eye position and eye movements to expand on the dynamic of our usability and user testing studies. The eye tracking system will increase our capability to capture biometric data that we are currently lacking and allow us to incorporate the biometric layer into our results analysis. In addition to the usability testing, eye tracking system can also be used in market research.I'm not the only one who finds this kind of creepy.