Meant only for cameras?

Seems that no matter how hard I try to get this to work people just cant see the messages. Ive tried it with several friends and the best they can pick out is a few letters. I was hoping this would be like the special faceplate you could get for nokia phones long ago but it seems the only way to properly see the message is with a time lapse exposure on a camera. Quite disappointing.

prodigy45 about Light Writer - Photography Effects