The Walgreens Advanced Activity Tracker will track steps taken, active minutes, distance traveled, calories burned, resting heart rate, and sleep.
Steps are tracked using internal hardware to detect movement, and this movement is then determined to be a step (or not a step) based on a unique step tracking algorithm.
Active minutes are calculated for any activity lasting 30 seconds or more. Any movement lasting less than 30 seconds will not count towards an active minute.
Distance traveled is calculated using three factors: number of steps taken, speed of those steps, and set stride length. Stride length can be adjusted under user settings in the Striiv app menu.
Calories are calculated using four factors: set weight and gender visible in user settings, the number of steps recorded, and the speed of those steps.
Heart rate is measured using the green LED light and a light‑sensitive photodiode on the underside of your Walgreens Advanced Activity Tracker. The light flashes on the blood pulsing under your skin and the photodiode measures the amount of green light absorbed. The amount of light absorbed at a given time determines your heart rate (this is why you need good skin contact with the underside of your Walgreens Advanced Activity Tracker and to be reasonably still to get accurate heart rate readings.)
Sleep is tracked using the same hardware used to track movement in the Walgreens Advanced Activity Tracker. Asleep, restless and awake periods are based on intensity of movement ranging from no movement to very little movement to recorded steps (corresponds directly with asleep, restless and awake measurements).
To view previously recorded data for all of these activities, simply select the tile for the desired activity on the Striiv app home screen. Here you'll see a graph appear showing previous data. For more information on how to navigate these graphs, reference the following article.