2. History of Interface
3. Concept of Augmented Reality
4. Business Implications
5. Limitations
6. Prospects
NUI is based on nature or natural elements.
Users can speak a command or directly touch the screen of device to start command.
Technology that overlaps virtual image with the image of real world. It gives people a wide range of information while they are seeing the real world.
With the rapid growth of smart-phone industry, AR market became a matter of great concern.

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