Thanks to Pat Patterson for pointing out that "Location is certainly an attribute of identity; in fact, Liberty published the ID-SIS Geolocation Service Specification in April this year. The Geolocation Service makes a user's current location available (with the user's consent, of course!) to other web services. So, for example, wireless subscribers could receive a daily SMS on their cellphone giving them the weather forecast for their current location."

By coincidence, a local Phoenix television station ran a segment Tuesday evening on Tracking your Teenagers with GPS.

If anyone knows of location-enabled applications that combine virtual directory services and GPS, please let me know.

Identity