The working principle of wechat movement:
The basic principle of WeChat movement is that there will be a forward acceleration when walking, and then a backward acceleration. By adjusting the threshold and time interval of these two accelerations according to the height and weight, the number of steps can be counted, and of course there are many optimization details.
Mobile phones have built-in vibration sensors or auxiliary processors, which store data according to the vibration frequency of these devices. Simply put, when people walk, the center of gravity moves up and down a little bit, and sensors and collaborators perceive this movement of the center of gravity and count it.
Extended data
Wechat campaign is really counting steps, which has nothing to do with the distance or the number of steps. The step counting data is not affected by the terrain. No matter walking or climbing stairs, the error is basically within 2 steps. Shaking the phone or bracelet back and forth can really increase the number of steps, and saying "cheating" is really feasible. There is also a way to prevent others from seeing their walking data. Take iPhone6 as an example, just cancel the "Join the leaderboard" option in the official WeChat account, or find the "Privacy" column in the phone settings, click Enter, find the "Exercise and Fitness" column, and click Close.