There's an app for that, but should there be?

Technologist Edmund Zagorin writes: "Like most things in the tech world today, ubiquitous GPS data is quickly becoming “social”. Of course, a lot of people want their friends to know where they are and what they’re doing at all times; they post it, tweet it, and check-in through FourSquare. But it may not be long before where we live in a world where our smartphone’s will give us the digital equivalent of Harry Potter’s Marauder’s Map, where we can examine our environs at any geographical scale to see the exact real-time GPS locations of our friends and family. To be sure, used wisely this technology has the potential to do a lot of good, probably even to save lives. But if information is power, then access to it is only as good as the intentions of the user."