I encourage my clients to use a pedometer or fitbit type of tracker. Most who have done so have enjoyed the feedback, though one stopped wearing it because she was too discouraged at how much she needed to do to get in 10,000 steps. Of course I tried to emphasize that she did not need to start at 10,000, that her goal could be 5,000 at first, but the gap seemed too immense for her. My other clients have enjoyed it. One uses the fitbit with her friends, and they have a mini competition to see who can get the most steps. That works as a good motivator for her.