1. Assist in the use of some programs to use more convenient, such as photos, if a program Multi Touch you can use two fingers in rotation. Zoom - zoom out, adjust picture editing easier.
2.
Allows applications to touch screen system easier and help streamline applications programs. Programs like movie, music
3. Reduce the keypad. On these devices into it. You try to observe. The computer nowadays are rarely the buttons. On the machine and the side. Everything can command all across the screen.
4. Help to book them to have fun. Some games will play more fun when the system Multi Touch added. (see examples of mobile games iPhone or iPad).
5. Help to use the Internet more easily. By the help of scaling the image or the letters on the page. To make reading easier.