"A Queen’s University Computing professor’s invention – recently unveiled at Google’s corporate headquarters in California – provides a unique, affordable way for advertisers to track the effectiveness of their messages by measuring how many people are looking at their billboards and screens."
"Called eyebox2™, the portable device uses a camera that monitors eye movements in real time and automatically detects when you are looking at it from up to 10 meters away, without calibration."
Does anyone remember the 2002 movie "Minority Report" when Cruise's character, Jon Anderton, is going through the mall (after the eye transplant) and all the visual ads appear and they target what he may want. Well, actually is was a Japanese gentlemen's eyes he had and when the scanners scanned his eyes they recommended merchandise based on the Japanese gentlemen's history. Kind of like the Eyebox2 and Amazon combined.
This technology is just a natural advancement and will soon no doubt become even more sophisticated.