"A labor-saving device for graffiti artists. An assistive tool or telematic proxy for taggers working in harsh environments. Long-needed relief for graffiti artists with RSI. Or simply, pure research into as-yet-untrammeled intersections of automation and architecture...
The ROBOTAGGER, an industrial robot arm programmed with GML, the new 'Graffiti Markup Language' created by Evan Roth and pals at the FAT Lab."
Scroll down to see it in action.