Boy this bike kit and app for the iPhone sounds seriously cool…
It comprises a frame-mounted sensor which cable-ties onto the chainstay and senses speed and cadence via magnets attached to the wheel and crank. This beams its info via 2.4 GHz RF to a dongle plugged in to the iPhone. The iPhone itself sits snug in a shock-absorbing handlebar-mount. You then fire up the free companion app and get access to all the usual data: speed, cadence, calories burned and so on, but on the big screen and in easy-to-view color. If you have GPS in your iDevice, it will also use that to let you know where you are.
My favorite feature is called “Chase Rider”, and it is like nothing so much as the ghost-driver feature in Super Mario Kart. It will remember past rides and play them back so you can race against your own best times.
All that and it’s still only $100! Genius
via Wired.com.