He took that watch off after the alert was triggered; "it's sweating my wrist" but uploaded the data to the PC and then the motionbased website when we got back.
As we were watching his route play back on Google Maps' satellite view - though he was surprised that the satellite had not photographed the dog that chased him in the park - I was struck by just how much education he had probably got from half an hour's messing about:
- learning that location devices work out your position from satellites
- getting good idea of how far 800m is
- learning what uploading to the internet meant (he showed off the map to his cousins at his aunt's later)
- seeing examples of photographs from space of his grandparents' house and environs.