000000339 001__ 339
000000339 005__ 20210319124759.0
000000339 037__ $$aLERSSE-RefConfPaper-2021-003
000000339 100__ $$aMasoud Mehrabi Koushki
000000339 245__ $$aOn Smartphone Users’ Difficulty with Understanding Implicit Authentication
000000339 260__ $$c2021-05-07
000000339 300__ $$amult. p
000000339 520__ $$aImplicit authentication (IA) has recently become a popular approach for providing physical security on smartphones. It relies on behavioral traits (e.g., gait patterns) for user identification, instead of biometric data or knowledge of a PIN. However, it is not yet known whether users can understand the semantics of this technology well enough to use it properly. We bridge this knowledge gap by evaluating how Android’s Smart Lock (SL), which is the first widely deployed IA solution on smartphones, is understood by its users. We conducted a qualitative user study (N=26) and an online survey (N=331). The results suggest that users often have difficulty understanding SL semantics, leaving them unable to judge when their phone would be (un)locked. We found that various aspects of SL, such as its capabilities and its authentication factors, are confusing for the users. We also found that depth of smartphone adoption is a significant antecedent of SL comprehension.
000000339 6531_ $$aImplicit Authentication
000000339 6531_ $$aActive Authentication
000000339 6531_ $$aSmartphone Unlocking
000000339 6531_ $$aSmart Lock
000000339 6531_ $$aMental Models
000000339 700__ $$aBorke Obada-Obieh
000000339 700__ $$aJun Ho Huh
000000339 700__ $$aKonstantin Beznosov
000000339 8560_ $$flersse-it@ece.ubc.ca
000000339 8564_ $$uhttp://lersse-dl.ece.ubc.ca/record/339/files/ia_chi2021.pdf
000000339 909C4 $$pMasoud Mehrabi Koushki, Borke Obada-Obieh, Jun Ho Huh, Konstantin Beznosov. On Smartphone Users’ Difficulty with Understanding Implicit Authentication. Proceedings of the ACM CHI Conference on Human Factors in Computing Systems (ACM CHI'21), 2021.
000000339 980__ $$aRefConfPaper