TY - CONF T1 - Barrier pointing: using physical edges to assist target acquisition on mobile device touch screens T2 - Proceedings of the 9th international ACM SIGACCESS conference on Computers and accessibility, October Y1 - 2007 A1 - Jon Froehlich A1 - Wobbrock,J.O. A1 - Kane,S.K. JA - Proceedings of the 9th international ACM SIGACCESS conference on Computers and accessibility, October ER -