You can't fool this activity tracker

(Northwestern University) No more faking out your smartphone or bracelet activity tracker. Scientists have trained activity trackers to spot the difference between fake and real activity. The new method detects, for example, when a cheater shakes the phone while lounging on the couch, so the tracker will think he's on a brisk walk. Clinicians and insurance companies are increasingly relying on smartphone and wearable activity trackers to reward active individuals for healthy behavior or to monit