heart rate

The feature uses a smartphone camera and flash to calculate a user's heart rate.

The non-prick device can measure blood glucose and monitor blood pressure without pressure cuffs.

As indicated by the FDA, the system can estimate pulse rate, heart rate, respiratory rate and/or breathing rates.   

The new wellness features use machine learning to observe subtle changes in chest movement or blood coloration, and are slated to drop for Pixel device users in the next month.

The Fitbit Heart Study is looking to enroll 200,000 to 250,000 device owners, and will support clinical evaluation and regulatory submissions of the company's PPG atrial fibrillation algorithm.

The new investigation also found substantial differences between the performance of specific devices, with consumer products generally outperforming research wearables.

Researchers will travel to India and Sierra Leone to test the technology in low-resource settings.

Fitbit is facing yet another class action suit, this time over its heart rate monitoring, which plaintiffs claim is inaccurate to a dangerous degree.

Just a few days before the first units start shipping, Apple has posted some support documents that pull back the curtain on some of the technical details of its heart rate monitor, and also give some insight into steps Apple has taken to head off potential skin irritation issues.