Experiment 1: Calculate the number of steps or the distance?

Xiao Fang and Chen Xiao stand on the same starting line. Xiao Fang is carrying an iPhone6 mobile phone, and Chen Xiao is carrying a sports bracelet. Xiao Fang walked with small steps, while Chen Xiao strode with meteors and walked the set distance of 15 meters. Xiao Fang walked 30 steps15m, while Xiao Chen only walked 20 steps.

As for the data displayed on the mobile phone, Xiao Fang took 34 steps and Xiao Chen took 17 steps. Compared with your own steps, the error is within 4 steps, which is basically accurate.

Conclusion: WeChat campaign is really counting steps, which has nothing to do with distance and pace.

Experiment 2: How to calculate steep slopes and stairs?

There are 9 stairs in the corridor. Xiao Fang walks through one floor and then turns to another. * * * Take 18 step, plus two corners, and Xiao Fang * * * takes 20 steps. The display on Xiao Fang's mobile phone has increased by 22 levels. The data obtained from slope experiments are basically similar.

Conclusion: Step counting data will not be affected by terrain. No matter walking or climbing stairs, the error is basically within 2 steps.

Experiment 3: Will you really cheat?

While standing still, Xiao Fang and Xiao Chen were holding an iphone6 phone and a sports bracelet. After ensuring the stability of the data, they began to shake the mobile phone and bracelet together. In the same 20 seconds, Xiao Fang shook 12 times, and Xiao Chen shook 1 1 time (one round trip is 1 time). Looking at the data in the WeChat campaign, Xiao Fang has 28 more steps and Chen Xiao has 24 more steps. Remove possible subtle errors, shake back and forth, and count 2 steps in the pedometer. The small square shakes 12 times, which is equivalent to presenting the distance data in about 24 steps.

Conclusion: Shaking the mobile phone or bracelet back and forth can really increase the number of steps, and the theory of "cheating" is really feasible.

skill

Don't want others to see your walking data? There's another way. 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.

Experts tell you

The principle of the recording step is as follows:

IPhone5s/6/6plus phones have built-in vibration sensors or auxiliary processors to 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.

From this point of view, there are still errors in the number of steps recorded in the "WeChat Movement". For example, if you don't bring your mobile phone occasionally, or shake it intentionally, the data will be changed, so the recorded steps will be inaccurate.