Search and find game: Visual breadcrumbs
CrowdOptic has patented the technology (U.S. Patent No. 8,527,340) that captures dynamic shifts in where people are looking through their electronic devices (think Google Glass). The technology should enable users to share their routes with each other (for a high-tech game of search and find), especially in complex multi-building environments such as universities campuses or shopping malls, and allow people to reroute in response to changing environmental conditions and the paths of other users.
Very cool and well positioned to get snapped up by you know who 😉