There have been some interesting experiments with location-specific games (see the work David Metcalf talks about), but this article really is interesting, talking about GPS equipped phones. I recall an early game for the Treo that placed aliens around you virtually (laid the images over your camera image), and you had to pan around with your Treo, spot, and shoot them. This is much more.
Now, imagine the learning potential: games for onboarding that have you and your cohorts running around the campus or plant and solving puzzles; having to try to sell to virtual customers, and tracking their effectiveness in both space and time; the rest are left as an exercise for the reader (I’m on vacation, after all… :) ). A topic for the Summer Seminar Series next week?