Fitbit company use/employer ethics

Hi all
I think I remember a news piece on the QS site a few months back reporting on a tie-in that Fitbit established with a company on the west coast, whereby several hundred employees were being tracked – leading to questions around the ethics of such information being made available to the employer. Can’t find it now, can anyone point me in the right direction?
many thanks

Have you tried contacting Fitbit directly?