i202 Fall 2010 School of Information, UC Berkeley

If you have an experience using touch-screen devices such as cellphone, e-book readers, or ATM, you might be a person who is awkward or clumsy to manipulate some electronic devices which are not equipped with touching screens. Nowadays, it is so natural that people try to touch the screen when they grab a brand-new mobile device because touching screens has seeped into their daily lives.