The trouble with using your iPhone as a bike computer is that it is vulnerable to rain, salty road spray and even the occasional unexpected drop onto the asphalt. What you need is a waterproof and shock-resistant mount so your phone survives long enough to call an ambulance when you fall off yourself.
That mount is [...]
Source: http://www.wired.com/gadgetlab/2011/02/750-bike-computer-little-more-than-an-iphone-case/
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