What is sensor ?

Sensor converts various phenomena such as temperature and brightness into electric signals etc, and various sensors are built in smartphone. In an example of Android smartphone ...

· Accelerometer

· Gyro sensor

· Ambient temperature sensor

· Gravity sensor

· Illuminance sensor

· Proximity sensor

· Geomagnetic sensor

· Barometric pressure sensor

etc. Besides this, it seems that various sensors are installed depending on the model.

If you use these sensors successfully it seems to be able to know various circumstance changes.