Did you ever spend interest for the sensitivities of your smartphone? Yes, your smartphone is sensible for a lot things going on outside of the hardcase. Android is able to support a lot of sensors: Light Temperature Pressure Humidity Proximity Soundness and the 3D - sensors like Accelerometer Gyroscope Magnetic field Orientation Gravity The Sensor tool shows you what happens behind the screen of your device. It's done straight forward: * select one of the sensors available on your phon