Trackpad

A trackpad functions in different ways and makes use of conductive sensing and capacitive sensing. Advanced features like scrolling a page are possible by configuring the settings for the trackpad. The use of two fingers triggers scrolling of a page in most trackpads. Although the trackpad is capable of sensing the absolute position, the resolution is limited by the size of the trackpad.

The advantages of a trackpad include:

• Most trackpads are highly resistant to dirt, moisture and surface scratches.
• Easier for a user to use compared to most input devices, as no pressure is involved and slight motion is only required for activating the same.
• The most efficient pointing device if space or portability is concerned.

The disadvantages of a trackpad include:

• The area for motion offered by a trackpad is often small.
• The types of devices that can make use of a trackpad are limited.
• Calloused or moist fingers can interfere with and cause disruption in the signals picked up by the sensors.
• The sensitivity of a trackpad can be a problem at times to certain users. The trackpad may be difficult to use in the case of things that need precision control.
• Heavy movement is not possible through the trackpad.