Security experts revealed recently that Apple's latest iPhone software stores a log of all locations detected by the unit's GPS feature. This data, though not sent to Apple, can be accessed by curious users.
Device owner Allan Black excitedly downloaded his location database yesterday, and set about building a "mash-up" using Google Maps and a Python script, only to find that his phone had only ever recorded one location: his own home.
"I don't understand it," Black told reporters, on IRC last night. "I think it must be broken." However, a more detailed search of the data did reveal a recent trip to a local supermarket. This, according to Black, was because the home delivery service would have "interrupted his Portal 2 marathon".
A morose Black later added, "this explains why my Foursquare account never took off."