Modern tablets and smartphones have acquired a large number of different devices and when buying it is important to find out if the tablet can be used as a video recorder or metal detector, compass, navigator, thermometer, plumb line, pedometer. In order to find out what sensors are in the tablet / smartphone, you can use different programs. For example, you can download the AnTuTu Benchmark program from PlayMarket and ask the consultant to install the program on the tablet and test it.
Direction Sensor - a direction sensor for determining the azimuth.
G-Sensor (Gravity-Sensor) - needed to register movement. Useful for a tablet if you use it as a video recorder, provided that there is an external camera (from 1.3 MP). Also protects the processor if dropped.
Light Sensor is needed to adjust brightness in order to reduce power consumption, prolong battery life.
E-compass - to determine the cardinal points in the Compass application (for Feng Shui or metal detector).
Proximity sensor - to determine the position of the phone during a call (mobile communication is turned on if the phone is brought to the ear).
Gyro-sensor is needed to detect rotation, angular velocity - for auto navigators, against hand shake - when taking photos, as well as for games.
Acceleration Sensor is almost everywhere, it is needed to rotate the screen, also to count steps in an application such as Pedometer, and as a building level / plumb line, as well as to determine locations via Wi-Fi or by network coordinates (if there is a SIM card slot or modem USB).
Pressure-sensor - air pressure sensor.
Temperature (including Ambient) Sensor - to determine the temperature.
Relative Humidity Sensor - for determining the absolute and relative humidity of the air.
Linear Acceleration Sensor - to determine the acceleration along a straight line (needed for auto navigators).
Rotation Vector Sensor - for device orientation, motion detection and device rotation, used for games.
