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Message: <blockquote data-quote="Target Hoona" data-source="post: 23599320" data-attributes="member: 558749"><img src="/styles/default/xenforo/smilies/default/no.gif"  class="smilie" loading="lazy" alt=":no:" title="No    :no:" data-shortname=":no:" /><img src="/styles/default/xenforo/smilies/default/no.gif"  class="smilie" loading="lazy" alt=":no:" title="No    :no:" data-shortname=":no:" /><img src="/styles/default/xenforo/smilies/default/no.gif"  class="smilie" loading="lazy" alt=":no:" title="No    :no:" data-shortname=":no:" /><img src="/styles/default/xenforo/smilies/default/no.gif"  class="smilie" loading="lazy" alt=":no:" title="No    :no:" data-shortname=":no:" /><img src="/styles/default/xenforo/smilies/default/no.gif"  class="smilie" loading="lazy" alt=":no:" title="No    :no:" data-shortname=":no:" /><img src="/styles/default/xenforo/smilies/default/no.gif"  class="smilie" loading="lazy" alt=":no:" title="No    :no:" data-shortname=":no:" /><img src="/styles/default/xenforo/smilies/default/no.gif"  class="smilie" loading="lazy" alt=":no:" title="No    :no:" data-shortname=":no:" /><img src="/styles/default/xenforo/smilies/default/no.gif"  class="smilie" loading="lazy" alt=":no:" title="No    :no:" data-shortname=":no:" />Sensors - definition                                Smartphones today come with a wealth of sensors  to facilitate a better user experience, provide apps with enhanced  information about the world around the phone and provide robust and  increased battery life.   Proximity Sensor  Detects when an object is near to the phone.  Most commonly used to  sense when a phone is held up to the users ear to turn off the display.   This saves both battery life and prevents accidental screen touches.  Accelerometer and gyroscope  Accelerometers in mobile phones are used to detect the orientation of  the phone. The gyroscope, or gyro for short, adds an additional  dimension to the information supplied by the accelerometer by tracking  rotation or twist.   An accelerometer measures linear acceleration of movement, while a  gyro on the other hand measures the angular rotational velocity. Both  sensors measure rate of change; they just measure the rate of change for  different things.  In practice, that means that an accelerometer will measure the  directional movement of a device but will not be able to resolve its  lateral orientation or tilt during that movement accurately unless a  gyro is there to fill in that info.   With an accelerometer you can either get a really "noisy" info output  that is responsive, or you can get a "clean" output that's sluggish.  But when you combine the 3-axis accelerometer with a 3-axis gyro, you  get an output that is both clean and responsive in the same time."  Accelerometers are also used to provide 'steps' information for a vendors 'health' application.  Digital compass   The digital compass that's usually based on a sensor called the  magnetometer and provides mobile phones with a simple orientation in  relation to the Earth's magnetic field. As a result, your phone always  knows which way is North so it can auto rotate your digital maps  depending on your physical orientation.   Barometer  The barometer assists the GPS chip inside the device to get a faster lock by instantly delivering altitude data. Additionally,  the barometer can be utilized to provide 'floors climbed' information to a phones 'health' app. With the advent of more accurate indoor navigation, the barometer can  assist in determine what floor a user is on within an airport for  example.   Biometrics  Biometric related sensors provide levels of enhanced security by  capturing and validating human related metrics.  Including Finger Print  recognition, IRIS (eye) scanning and full facial recognition.  Biometric sensors provide a more secure but more convenient way to unlock phones and pay for purchases.  Additionally, biometric sensors can be used to collect a users heart  rate and SpO2 (the estimate of arterial oxygen saturation) for use  within a vendors 'health' application.  Augmented & Virtual Reality   The highly accurate sensors detailed above, when combined with the  powerful CPU & GPU's of modern smart phones, allow very realist and  responsive Virtual Reality applications to be created.  When the sensors  are combined with a smartphones camera they facilitate Augmented  Reality applications</blockquote>

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