Chris Harrison, Scott E. Hudson. Abracadabra: wireless, high-precision, and unpowered finger input for very small mobile devices. In Andrew D. Wilson, François Guimbretière, editors, Proceedings of the 22nd Annual ACM Symposium on User Interface Software and Technology, Victoria, BC, Canada, October 4-7, 2009. pages 121-124, ACM, 2009. [doi]
Abstract is missing.