![](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEi3r9zoXnCJxGtdMvt_PrOP00C9BGzKrVQxaGyVR3uVn4uC98PUxeui419AizS4jMgNnEyxwx8tPWdFwWlpLGNZ0p8DlQj3LJPPl1wFCUXgh3zFN-q_0IuB99cWhkuGJgV70IYD/s320/stareout.jpg)
Archibald Ingall Stretton in London built an advergame for the O2 mobile provider that puts you in a staring contest with three rugby players. The exciting part is that the game is able to tell when you blink or look away: "We capture the output of the webcam using BitmapData, using the current and previous frames of data we apply a Difference filter to the two images and then we analyse, pixel by pixel, what has changed."
-- thank you, Geoff.