Journal
UIST'15: PROCEEDINGS OF THE 28TH ANNUAL ACM SYMPOSIUM ON USER INTERFACE SOFTWARE AND TECHNOLOGY
Volume -, Issue -, Pages 323-332Publisher
ASSOC COMPUTING MACHINERY
DOI: 10.1145/2807442.2807444
Keywords
multitouch; crossing; menus; surfaces; input
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We define, explore, and demonstrate a new multitouch 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. A formative study reveals pin-and-cross kinematic characteristics and evaluates fundamental performance and preference for target angles. These results are used to form design guidelines and recognition heuristics for pin-and-cross menus invoked with one and two pin fingers on first touch or after a drag. These guidelines are used to implement different pin-and-cross techniques. A controlled experiment compares a one finger pin-and-cross contextual menu to a Marking Menu and partial Pie Menu: pin-and-cross is just as accurate and 27% faster when invoked on a draggable object. A photo app demonstrates more pin-and-cross variations for extending two-finger scrolling, selecting modes while drawing, constraining two-finger transformations, and combining pin-and-cross with a Marking Menu.
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