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Mobile Minutes: Data use doubles; Google’s bot challenge; Fitbit’s inaccuracies; VR hype

Study shows Fitbit trackers highly inaccurate
A class action lawsuit against Fitbit may have grown teeth following the release of a new study which claims the company’s popular heart rate trackers are “highly inaccurate.”
Read more on CNBC

Why the virtual-reality hype is about to come crashing down
Makers of virtual-reality headsets think 2016 will be the year of VR. The experience “is radically different than any computing experience you’ve had before,” says Marc Metis, a vice president at HTC Corp., maker of the Vive headset.
Read more on The Wall Street Journal