Now showing items 1-2 of 2

    • Responsibility and Tangible Security: Towards a Theory of User Acceptance of Security Tokens 

      Payne, Jeunese; Jenkinson, Graeme; Stajano, Frank; Sasse, M. Angela; Spencer, Max (Internet Society, 2016)
      Security and usability issues with passwords suggest a need for a new authentication scheme. Several alternatives involve a physical device or token. We investigate one such alternative, Pico: an authentication scheme that ...
    • To Have and Have Not: Variations on Secret Sharing to Model User Presence 

      Stafford-Fraser, Quentin; Stajano, Francesco Mario; Warrington, Chris; Jenkinson, Graeme; Spencer, Max; Payne, Jeunese (ACM, 2014-09-13)
      We address the problem of locking and unlocking a device, such as a laptop, a phone or a security token, based on the absence or presence of the user. We detect user presence by sensing the proximity of a subset of their ...