This android application on Java reads the parameters of the device's position in space and determines how fast it is moving. If the device moves too fast, the app emits a loud sound, notifying everyone around that it is “unhappy”.
Clone this project and open with Android Studio \ Idea, then you can test it on your smartphone
git clone https://github.com/AnyashaTk/Yall.git
The main idea was to create a signaling for the phone