Comments (4)

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Tincho's picture
Activity Score 1093

I think I dont get it.

How do you get it dark?? What does it say about using natural energy sources?? It doesnt make me look at it... looks boring.

But maybe I just dont get it.

vurtomatic's picture
Activity Score 364

Because it glows in the dark and doesn't require an external power source? Shrug.

muxa's picture
Activity Score 602


Luis Maram's picture
Luis Maram
Activity Score 252

It is clear. First, people see the poster with lights on. When light is turned off, the message appears.

Good job, but it is not new. Philips did it first: