"A camera that monitors eye movements from up to 10 metres away makes it possible for smart billboards that track the attention of passers-by. Until now, eye-tracking systems have only worked over about half a metre." Developed by Roel Vertegaal, a Canadian professor, the device is called eyebox2 and costs $999. More at Townhall.com and New Scientist Tech. Tech specs (pdf).
-- thank you, John
Earlier:
Glasses Track Eye Movement, Ad Exposure
Nielsen to Measure Billboard Exposure with nPod
