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You are walking down the street with a friend. A shot is fired. The two of you duck behind the nearest cover and you pull out your smartphone. A map of the neighborhood pops up on its screen with a large red arrow pointing in the direction the shot came from.

A team of computer engineers has made such a scenario possible by developing an inexpensive hardware module and related software that can transform an Android smartphone into a simple shooter location system.
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The latest thing in technology is wearable computers: wristbands, watches and glasses. Google has invented glasses that incorporate both a computer screen and a camera, so that we can call up information with voice commands and capture an image of something just by looking at it. Start-up companies are in the process of developing pendants, clip-ons, bracelets and patches embedded with sensors that connect to your smartphone.
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In the March 14th edition of the Financial Times, Richard Waters writes: "What people choose to strap to their wrists has much to do not just with ease of use, but also fashion and self image." Swiss watch makers, who sell the most timepieces, know that their customers aren’t just paying big bucks "just because they want to know the time."
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Several worrisome laws that restrict our freedom have been passed recently and now Apple has patented technology which would allow governments and police to block transmission of information, including video and photographs, from any public gathering or venue they deem "sensitive," meaning that these powers will have control over what can and cannot be documented on wireless devices during any public event.
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