The study was really about the feasibility of using cell phones to track teen girls to look at the impact of environment on health behaviors. I feel sure the researchers knew that cell phones could do tracking, with known limitations.

The results of a study by researchers from Indiana University School of Medicine, published in the April issue of the Journal of Adolescent Health, show that indeed girls 14- to 16-year-old girls will carry the phones. The pilot also showed one interested and unexpected thing: they were spending more time away from home, school and surrounding areas than anticipated.

- Science Daily

This past week two of the many tech players with a toe in the geospatial waters, Apple and Yahoo, announced new developer offerings that will add to the twists and turns location based services have taken on the road to maturity. One of the services of the iPhone SDK is Core Location, meaning developers can develop native applications that take advantage of the pseudo-location abilities. We'll have a look at the iPhone SDK and Fire Eagle from a geospatial perspective plus explore what the real reason is for wanting navigation on your mobile device.

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