Originally Posted by
Stick69
Yes, I think it is a BT monogamy issue.
I am trying to decide between getting a cadence sensor or a ANT+ dongle for the stoker but I am not sure she needs the information. We have a lot of small hummocks on our MUP and I use speed and cadence to help time shifting, coasting, and pedaling. We use heart rate to try and stay in the zone we agreed for a particular ride.
(You should interested in what your stoker wants as well as what she needs.

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The Wahoo sensors should be able to support a BT phone and multiple Ant+ head units at the same time.
An ANT+ dongle to plug into the phone? How well are these supported? I'd be concerned that it would be something that would get bumped/broken.
I'm not sure what sensor you do have. You can get a magnet-less Wahoo cadence sensor for $40. They also have a magnet-less speed sensor for the same price.
It seems more sensors makes more sense than fussing with a dongle (that you have to keep taking on and off).