Anycast is a new IPv6 function in which an anycast address can be assigned to multiple nodes that provide the same service. The Anycast packet is transmitted to one appropriate no...
This paper reports results from two field trials of TrottingPal, a mobile system that supports event information management and seamless collaboration between spectators at the tr...
We show how to convert regular keyboard-entry CAPTCHAs into clickable CAPTCHAs. The goal of this conversion is to simplify and speed-up the entry of the CAPTCHA solution, to minim...
Richard Chow, Philippe Golle, Markus Jakobsson, Lu...