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Now you see me, now you don't: protecting smartphone authentication from shoulder surfers.

, , , , , , and . CHI, page 2937-2946. ACM, (2014)

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Physical posters as gateways to context-aware services for mobile devices, , and . Mobile Computing Systems and Applications, 2004. WMCSA 2004. Sixth IEEE Workshop on, page 10--19. IEEE, (2004)Privacy-enhanced intelligent automatic form filling for context-aware services on mobile devices, , and . Workshop Artificial Intelligence in Mobile Systems, (2004)Flow of electrons: an augmented workspace for learning physical computing experientially., , , , , and . ITS, page 182-191. ACM, (2011)Personalised Chats with Voice Assistants: The User Perspective., , and . CIU, page 53:1-53:4. ACM, (2020)"I'd like an Explanation for That!"Exploring Reactions to Unexpected Autonomous Driving., , , and . MobileHCI, page 36:1-36:11. ACM, (2020)Frontal Screens on Head-Mounted Displays to Increase Awareness of the HMD Users' State in Mixed Presence Collaboration., , and . CoRR, (2019)Prototyping Non-Deterministic Algebraic Specifications using the RAP System.. ADT, (1988)Investigating the Third Dimension for Authentication in Immersive Virtual Reality and in the Real World., , , and . VR, page 277-285. IEEE, (2019)Nondeterministic Algebraic Specifications and Nonconfluent Term Rewriting.. J. Log. Program., 12 (3&4): 237-255 (1992)The Influence of Transparency and Control on the Willingness of Data Sharing in Adaptive Mobile Apps., , , , and . Proc. ACM Hum. Comput. Interact., 6 (MHCI): 1-26 (2022)