Chris Harrison, Scott E. Hudson. Scratch input: creating large, inexpensive, unpowered and mobile finger input surfaces. In Steve B. Cousins, Michel Beaudouin-Lafon, editors, Proceedings of the 21st Annual ACM Symposium on User Interface Software and Technology, Monterey, CA, USA, October 19-22, 2008. pages 205-208, ACM, 2008. [doi]
Abstract is missing.