Photos with shifting shadows come to life

Despite advances in image-capturing technology, photographs preserve an unchanging moment in time.
Now a new zero power display breathes new life into still images by letting an image change in appearance through the day as the direction of the Sun's light changes.
Using the system, shadows in a still life can be made to move and lengthen just like they do in the real world, or the Sun could be made to move across the sky of a landscape photo.

Full article on New Scientist Tech