The easy concept of monitor touch screen helps to introduce the viewers step by step to the capabilities of multi touch monitor. The cutting edge touch screen also motivates interactions between viewers located in different parts of the world. On the other hand, the drawback of this method is that in a monitor touch screen or moderator, at least a voice is needed to explain the interaction possibilities. Besides the increase of personal expenses on newly introduced monitor touch screen, the tension of the global story or immersion of the touch screen viewer may be lost.
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