From the annals of "why didn't I think of that?", an app that keeps track of where you've been so you can go somewhere else instead:
[Art student Tom] Loois’s final project ended up being a smartphone app called BlankWays, which charts your progress through the city, noting which paths you’ve come down before and suggesting itineraries to cover new ground. The app indicates and measures which parts of the city you’ve traveled, and which you haven't.
Loois isn’t the first person to meticulously chart his travel through the city. There’s a guy in New York who has made it his goal to walk every single block in the five boroughs. (It’s supposed to take him two years.) And technology corporations like Google and Apple regularly keep track of their clients’ movements. But Loois’ app will make it easy for everyone to do so, on a street by street scale, just for fun. He claims that he's not consistently late as a result of the detours, but we're not so sure - filling in those white spaces looks like it could become an obsession.
This also explains why people with Asperger's will take over the world soon...