iMac 27" using iSight camera, Processing codes, 2013
The camera looks at viewers and draws them using rotating bars as pixels. Those rotating bars remain gradient trails behind, the faster a bar rotates the longer trail, and the longer trails makes that area darker. Pixel intensity values from the camera are converted into the speed of corresponding bars on the screen and then the speed of the bars are translated into light intensity on the eyes of the spectators. Delay in visual update of the screen due to the rotating speeds of the pixel bars create naturally sustained existential contrast between the real and the visual space.