I don't spend Garmin type money for my computers, but I do use the same one on a couple of bikes. Some other manufacturers may do it as well, but I know for my CatEye model, I am able to buy a wiring harness separately... so my CatEye model with cadence just gets swapped between bikes. I sometimes use my cell phone to track rides as well with MapMyRide. However, when in a remote area, I don't always like using my cell's battery for that function.