Take a look at this short film that gives you a brief glimpse of the future by exploring the playful uses of light and an iPad
The tech savvy engineers use photographic and animation techniques that were developed to draw moving 3-dimensional typography and objects with an iPad. In dark environments, they play movies on the surface of the iPad that extrude 3-d light forms as they move through the exposure. Multiple exposures with slightly different movies make up the stop-frame animation.
Making Future Magic: iPad light painting from Dentsu London on Vimeo.