Functionality of accelerometer of an iphone

Describe the functionality of accelerometer of an iphone.

- iPhone responds to motion using a built-in accelerometer.

- The accelerometer detects the movement and changes the display accordingly, at the time of rotating iPhone from portrait to landscape.

- Photo browsing, web browsing, and music playing support both upright and left or right widescreen orientations.

- The iPhone does not rotate the screen when turned upside-down, with the Home button above the screen, unless the program that is running has been specifically designed to do so.

- The 3.0 update has added landscape support for other applications, such as email, and introduced shaking the unit as a form of input.

- It can be used to control third-party apps, notably games.

- It is also used as a pedometer for fitness tracking purposes.