Linking a sensor
Nike + iPod bases its workout data on a signal from a sensor (sold separately) that you attach
to your shoe. The first time you start a workout, you’re prompted to activate your sensor, which
automatically links the sensor to iPhone. You can also use Nike + iPod settings to link a sensor
Nike + iPod can link to only one sensor at a time. To use a different sensor, use Nike + iPod settings
to link to the new sensor.
Link your sensor to iPhone: Attach the sensor to your shoe, then go to Settings > Nike + iPod >
Link to a different sensor to iPhone Go to Settings > Nike + iPod > Sensor and tap Link New.