Modern mobile phones are much more than simple communication devices with a connection to the Internet. With microphones, cameras, accelerometers, compasses, temperature gauges, and brightness detectors, smart-phones have become extra-sensory devices which able to augment your own perception.
Sensors that detect physical and environmental properties offer an exciting innovation for enhancing the user experience of mobile applications. The incorporation of electronic compasses, gravity sensors, brightness gauges, and proximity sensors in modern devices provides an array of new possibilities for interacting with devices, such as augmented reality and physical movement-based input.
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