CITY UNIVERSITY OF HONG KONG 香港城市大學 Accessibility, Extensibility, and Accuracy in Mobile Device Interaction 流動裝置互動的可達性、可擴展性和準確度 Submitted to School of Creative Media 創意媒體學院 in Partial Fulfillment of the Requirements for the Degree of Doctor of Philosophy 哲學博士學位 by LI Wing Ho Andy 李穎豪 May 2015 二零一五年五月