So I was just looking at this post on the Wired website, which lists "Five iPhone Apps That Replace Bike Hardware" (sadly, none of them is a 15 mm box wrench, but whatever). One of the apps uses a microphone and a little plastic tab attached to a spoke to measure speed by timing the sounds that the tab makes when it hits the frame, using the wheel size, and doing maths. That's cool (if slightly too complex), but here's what I don't understand: The iPhone and iPod Touch have accelerometers in them, right? (Right.) Accelerometers, if their name is to be credited, measure acceleration. So if you have a device that measures acceleration, and it is programmed to presume a velocity of zero when you turn it on, can't it pretty much keep track of your speed? How come my Touch can't act as a speedometer just by being on, without the aid of jury-rigged craziness? Isn't that what this future technology is all about? And where is my flying car?!!
Tuesday, July 21, 2009
Posted by El Presidente de China at 11:36 PM