Changes

Only the center region of the trackpad has capacitance, responding to a finger.

Only the center region of the trackpad has capacitance, responding to a finger.

=====Trackpad as Mouse=====

=====Trackpad as Mouse=====

The use of the finger on the central trackpad area serves as the primary input device for pointing.  Though external [[USB peripherals|USB mice]] will work seamlessly with the laptops, their availability will be limited, and activity designers should not expect that children will have access to them.  This means that a certain lack of precision can be expected when moving the cursor about the screen, and activities should not require extremely precise motion.  Excessively small controls should also be avoided for similar reasons; details on how to design interface elements reside in the [[OLPC Human Interface Guidelines/The Sugar Interface/Controls|Controls]] section.

The use of the finger on the central trackpad area serves as the primary input device for pointing.  Though external [[USB peripherals|USB mice]] will work seamlessly with the laptops, their availability will be limited, and activity designers should not expect that children will have access to them.  This means that a certain lack of precision can be expected when moving the cursor about the screen, and activities should not require extremely precise motion.  Excessively small controls should also be avoided for similar reasons; details on how to design interface elements reside in the [[OLPC Human Interface Guidelines/The Sugar Interface/Controls|Controls]] section.