english: I met these guys called GRL, Graffiti Research Lab, and they have a technology that allows them to project a light onto any surface and then, with a laser pointer, draw on it, and it just registers the negative space.
non_english: Upoznao sam momke koji se zovu GRL, Laboratorija za istraživanje grafita, i oni imaju tehnologiju koja im omogućava da projektuju svetlost na bilo koju površinu i onda, laserom, crtaju po njoj i ona registruje negativni prostor.