But it also varies depending on what you're trying to measure. Almost all fitness trackers count steps and distance traveled, and it's becoming increasingly common to measure heart rate. Step count: Most devices work great for counting steps when walking briskly. When it comes to everyday activities and intermittent walks, devices placed on the finger or hand often misinterpret hand movements as steps.
Most portable devices use motion sensors to record how many steps we take, but studies have found that rhythm can affect accuracy. Since physical activity trackers are now used to monitor the activity level of heart patients, who often need breaks when walking, researchers advocate improving the accuracy of physical activity trackers in measuring this type of movement. The physical activity trackers of the different brands vary in terms of the measurement of the indicators and all are affected by the state of activity, which indicates that manufacturers of physical activity trackers need to improve their algorithms for different states of activity.
