Lawyers Say Fitbit’s Heart Tracker Is Way Off
The heart rate tracker technology in fancier models of Fitbit starts to become inaccurate when people start exercising, according to a study included in an amended class-action lawsuit against the company. In a press release, plaintiffs’ lawyers say California State Polytechnic University put both Fitbits and ECG sensors on 43 separate subjects tested for 65 minutes of moderate to …