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Comment by dryicerx | Hacker News Reader

Hmm... kind of off topic, but just realized a DIY idea offshoot from this.

    Plane of Glass
    UV reactive Dry/Wet Erase Marker
    UV Light From the Back or along glass edges

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You could get those UV LEDs and embed them in the edges of the glass.

I've seen something like this in restaurants before. They have some kind of grease-pencil/crayon and a black-backed pane of glass that's lit with UV light. It glows pretty nicely. Does anyone know what this is exactly?

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