IMAGE (IMAGE) Nara Institute of Science and Technology Caption Principle of our touchscreen system. (a) Human eye or conventional camera sees within the field of view, not only the finger but also projected screen. (b) Our camera system captures only a part of the finger. (c) We can select the capturing area only just above the projected screen (red area). Credit Yasuhiro Mukaigawa Usage Restrictions Credit required License Original content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.