Hiroshi Chigira, Atsuhiko Maeda, Minoru Kobayashi. Area-based photo-plethysmographic sensing method for the surfaces of handheld devices. In Jeffrey S. Pierce, Maneesh Agrawala, Scott R. Klemmer, editors, Proceedings of the 24th Annual ACM Symposium on User Interface Software and Technology, Santa Barbara, CA, USA, October 16-19, 2011. pages 499-508, ACM, 2011. [doi]
Abstract is missing.