User:Larrasquitu/Touch Technology

Surface Acoustic Wave
Technology is based on sending acoustic waves across a clear glass panel with a series of transducers and reflectors.

The Laws for SAW
Most Touch technology must be touched by finger, gloved hand, or soft-tip stylus. Can be affected by large amounts of dirt, dust, and / or water in the environment. Relatively expensive in comparison to other technologies

Multi-Touch
When Steve Jobs created the Iphone 4s The purpose was to be able to touch your screen with one or more fingers to do multiple stuff.

Refers to a touch sensing surface's ability to recognize two or more points of contact with the touch screen surface.

Wikipedia Editing
The metallic layers are two different types. The first one is Matrix which is a striped electrodes on substrates such as glass or plastic face each other. The second type of layer is Analogue which consists of transparent electrodes without any patterning facing each other and Low production costs.