Luo, Yuexing2015-05-132015-05-132015-05-132015http://hdl.handle.net/10012/9333This thesis focuses on the evaluation, exploration and demonstration of crossing paradigm with touch modality. Under the scenario of crossing selection, the target is selected by stroking through a boundary 'goal' instead of pointing inside a perimeter. We present empirical evidence to validate crossing performance for touch. Inspired by the experimental results, we then develop, evaluate and demonstrate a new unimanual multi-touch interaction space called 'pin-and-cross'. It combines one or more static touches ('pins') with another touch to cross a radial target, all performed with one hand. Our work serves to provide necessary support for the exploration and evaluation of more expressive multi-touch crossing techniques.entouchcrossinginteraction techniquemenususer interfacesMaster ThesisComputer Science