The ACM CHI Conference on Human Factors in Computing Systems, an international conference of human-computer interaction, was held on May 7-12, 2011 in Vancouver, Canada. At the conference, KAIST’s research team presented a paper on the development of prototype, called "remote touch system," for manipulating a LED screen by putting user’s thumb’s shadow on a television or smart phone screen. Discovery News posted an online article on the technology, dated May 19, 2011. For the article, please copy and paste the following link in the address bar of Internet Explorer:  

http://news.discovery.com/tech/shadow-remote-touchscreen-110519.html?print=true