A touch user interface is a type of interaction between a user and a computer-based device. This interaction is by doing a physical touch on the screen and the computer responds to this touch interaction.
The first touch screen phone was launched in 1992 by IBM and was named IBM Simon.
iPhone was the latest invention of the touch screen phone which gets its popularity in no time.
Now you can see much variety of touch screen devices around you.
Whether it is touch screen microwave, touch screen car LCD, touch screen monitor, touch screen ATMs and others.
The interface of touch screen devices is made in such a way that it is easy for people to use them.
Some touch screen interface is fully controlled by the touch screen while others are partially controlled by the screen and another function is controlled by the physical keyboard.