An article in Wired looks at the use of LED-throwies and chalk by geeks trying to make messages beyond the spray can.

[One] development is the Electro-Graf, a technique that lets street artists embed LEDs, motors, solar panels or other electrical objects into a wall using conductive spray paint. Electro-Graf techniques give traditional tags a vibrant shine or even moving parts.

Wired News: Geek Graffiti Takes on New York

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