What if we could turn a city wall into a dynamic canvas that not only shows your art but also feeds real‑time data about the street—traffic, noise, even the mood of the commuters? A wall that reacts to your spray, letting you paint patterns that light up in sync with the city’s pulse. Think of it as a public art project that’s also a data display. How do you feel about blending your rebellious strokes with a tech‑driven interface?