The FlexStylus is a prototype system that embeds sensors measuring analog flex input in a computer stylus. Through fiber optic sensing, the device detects both absolute extent and angle of flexion. The device was designed to allow these two channels of analog input, as well as derived parameters such as rate and relative motion, to augment the basic x/y functionality of a computer stylus. The goal of this augmentation is to improve a digital artist's ability to control their work through tactile manipulation, as well as expand the artist's range of expression and effects. We also introduce the use of flex input to create an additional pointing space, allowing for the execution of gestural drawing commands without moving the tip of the pen.

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Keywords Augmented stylus, Bend gestures, Deformable user interfaces, HCI, Stylus design, Tablet
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Conference 34th Annual CHI Conference on Human Factors in Computing Systems, CHI EA 2016
Fellion, N. (Nicholas), Eady, A.K. (Alexander Keith), & Girouard, A. (2016). FlexStylus: A deformable stylus for digital art. In Conference on Human Factors in Computing Systems - Proceedings (pp. 2482–2489). doi:10.1145/2851581.2892444