This riddle for escape room is a screen decorated with a monitor on which the video is launched. At start, the picture is static, but when the motion sensor activates, the video in the picture comes to life. 

 * You can change the video being played and the decor of the picture. It can be used as a clue to a riddle or a secret niche. For example, after playing the video in the picture, a hidden compartment may open or the key may fall out.You can change the activation method, for example on the picture frame, players need to install the missing parts for activation.