Daniel Ashbrook James Clawson Kent Lyons Thad Starner Nirmal J. Patel Quickdraw: the impact of mobility and on-body placement on device access time. 219-222 2008 CHI http://doi.acm.org/10.1145/1357054.1357092 conf/chi/2008 db/conf/chi/chi2008.html#AshbrookCLSP08