Woman's Fitbit saves her life after it detected a strange change in her heart rate

A fitness tracker could be more useful than just helping you shed weight — the data it's collecting about your body could go as far as saving lives.

73-year-old Patricia Lauder from Connecticut noticed her Fitbit data was logging an abnormally high resting heart rate of over 140 beats per minute, far higher than her usual 60 to 70, CNN reported.

She had already visited the doctor after a recent sinus infection and was waiting for results, but the data was alarming enough that she called 911 to be sent to the emergency ward. Read more...