The website called Trackstick.com has listed an interesting GPS-enabled gizmo called "Trackstick."
Basically, it's a clip-on battery powered device about the size of a pack of gum that tracks and records movements (tech specs say it has a 2.5 meter accuracy.)
The really slick thing though, is that the Trackstick coordinates with Google Earth (and similar online mapping programs) to create a visual record of the path(s) that anyone wearing a particular Trackstick traveled!
This seems like a great tool for evaluators and exhibit developers to get a handle on where visitors travel in zoos, botanical gardens, and large outdoor historical sites as well as around museum sites.
Has anyone out there tried one of these? I'll present my own impressions in a future posting.