Quentin Staórd-Fraser, Graeme Jenkinson, Frank Stajano, Max Spencer, Chris Warrington, Jeunese Payne. To have and have not: variations on secret sharing to model user presence. In A. J. Brush, Adrian Friday, Julie A. Kientz, James Scott, Junehwa Song, editors, The 2014 ACM Conference on Ubiquitous Computing, UbiComp '14 Adjunct, Seattle, WA, USA - September 13 - 17, 2014. pages 1313-1320, ACM, 2014. [doi]
Abstract is missing.