Segatore and others checked her pockets for a wallet, an ID, a cell phone, anything that would help them find her parents' names.

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Upgrades to the SpareOnePlus include a location-based service which identifies the exact location of the cell ID, accessible through a free smartphone app, as well as audible numeric feedback which reads the number dialed and incoming calls aloud.

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The camp's re-engineering awards went to a group that developed a technique to alter the ID numbers on Global System for Mobile Communications cell phones and to another team that found a way to defeat a biometric fingerprint scanning system.

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Reality mining may appear to be more science fiction than fact, but from our cell phones to e-mail to work ID badges, we leave behind constant trails of information about ourselves.

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