What does The Haywain represent? Or Mondrian's Broadway Boogie Woogie? How about Rothko's Red on Maroon? In the case of the Constable painting, the answer seems straightforward, and we can even visit the site of the scene he sketched (more or less). Mondrian, rejecting the distinction between abstract and representational art, himself suggested that his work represented structure. But with Roth...

Typing passwords is vulnerable to shoulder-surfing attacks. We proposed a resistant scheme embedded in traditional textual this study. With the scheme, when password field on focus, pattern appears it as hint tell user how enter password. Following hint, needs skip some characters while typing The be skipped are randomly selected so that an observer will not able see whole even if authenticatio...