Many insurers offer breaks to people who wear activity trackers that gather data on them; as Cathy "Mathbabe" O'Neil points out, the allegedly "anonymized' data-collection is trivial to re-identify (so this data might be used against you), and, more broadly, the real business model for this data isn't improving your health outcomes -- it's dividing the world into high-risk and low-risk people, so insurers can charge people more. (more…)