"Call it advertisement hacking. Technology-inspired artists have designed ways for you to mask or perhaps even delete company logos in your field of view as you wander around a city or shopping center. The trend subverts a technology called augmented reality (AR), by which virtual information—say restaurant ratings—is overlain on the real world as you peer through smart glasses or a smartphone camera. New York artist Jeff Crouse has designed a program called Unlogo, which detects corporate logos in a video stream, then replaces them. ... The project is still under development and does not yet run in real time, but Crouse's goal is to produce a video filter for removing logos from, say, home movies."