Presently, majority of the screen of various mobile devices possess a visual display that can detect the presence and location of touch, which of course is within the display area. Such type of screens are referred to as Touchscreens.
Touchscreens enables a user to interact directly with whatever is displayed on the screen. It eliminates the tedious use of a pointer controlled by a mouse or touch pad. The Touchscreen also let the user interact with the display without making use of any intermediate device that would need to be held in hand, other than a stylus, which is optional in modern Touchscreens.
The touchscreens we see around us are based on different technologies, but the two most common variety are the resistive touchscreen and capacitive touchscreen. Resistive touchscreens in crude terms are those type of touchscreens that can respond to touch from any object, that is from both conductive and non-conductive objects. The second variety which is the capacitive touchscreen is a type of touchscreen that responds to a special capacitive stylus and conductive objects of which the human hands and fingers are eligible.
Finally, a friend of mine who did not have any prior knowledge about the types of touchscreens, but is a person who determines to discover things on his own observed that some touchscreens work on application of pressure, which in this case blood pressure, he then took a sachet of water, drain some part of the water, and he made the sachet containing water to touch the screen. The screen responded perfectly. The screen he carried out this test on was a capacitive touchscreen. Touchscreens are everywhere, and they rove to be the key to unlocking future technologies.
Sure these touch-sreen devices hve taken computing and technology generally to a higher level. I just imagine what it would be like to use a device of 5.55"(Samsung Galaxy Note II) but instead with buttons!!!! :)
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