Originally Posted by markf
Peter White's web site claims that you can use the hub dynamo in place of the wheel magnet to provide data to your computer, which seems like a pretty elegant solution to the problem.
Considering how close I have to keep the wheel magnet to the sensor to get my bike computer to work, it should be pretty easy to mount the computer pieces far enough away from the hub generator to eliminate interference. I have a Schmidt hub generator on one bike and a Shimano 3N-71 hub generator on another bike, with computer sensors on the back wheels of each bike, and there's never been a problem.
I haven't looked at that page for a bit, but I think that he was referring to a specific computer that has the magnet for the computer actually on the hub. Mine goes out near the wheel so that wouldn't work for me. Like I said, I think be depends on what kind of a computer. This is something I'm researching as well though since I want to get a dynamo hub on my commuter eventually.