The file size you've mentioned, , is exactly associated with the ACM Digital Library download for the research paper "Enabling passers-by to interact with public displays by gaze" .
: Tests showed that users could successfully select items and play games on public displays with high accuracy after only a few seconds of "looking" at the screen. Is this what you are looking for?
: The study focuses on "spontaneous interaction," solving the problem of how a system can quickly calibrate to a new user's eyes as they move through a public space. Key Findings :