Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Double Patterns: A Usable Solution to Increase the Security of Android
  Unlock Patterns   Android unlock patterns remain quite common. Our study, as well as others,
finds that roughly 25\% of respondents use a pattern when unlocking their
phone. Despite known security issues, the design of the pattern interface
remains unchanged since first launch. We propose Double Patterns, a natural and
easily adoptable advancement on Android unlock patterns that maintains the core
design features, but instead of selecting a single pattern, a user selects two,
concurrent Android unlock patterns entered one-after-the-other super-imposed on
the same 3x3 grid. We evaluated Double Patterns for both security and usability
by conducting an online study with $n=634$ participants in three treatments: a
control treatment, a first pattern entry blocklist, and a blocklist for both
patterns. We find that in all settings, user chosen Double Patterns are more
secure than traditional patterns based on standard guessability metrics, more
similar to that of 4-/6-digit PINs, and even more difficult to guess for a
simulated attacker. Users express positive sentiments in qualitative feedback,
particularly those who currently (or previously) used Android unlock patterns,
and overall, participants found the Double Pattern interface quite usable, with
high recall retention and comparable entry times to traditional patterns. In
particular, current Android pattern users, the target population for Double
Patterns, reported SUS scores in the 80th percentile and high perceptions of
security and usability in responses to open- and closed-questions. Based on
these findings, we would recommend adding Double Patterns as an advancement to
Android patterns, much like allowing for added PIN length.

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The categories of this paper are: math
34
The categories of this paper are: chem-ph
20
The categories of this paper are: acc-phys
28
The categories of this paper are: alg-geom
13
The categories of this paper are: quant-ph
5
The categories of this paper are: gr-qc
26
The categories of this paper are: bayes-an
35
The categories of this paper are: mtrl-th
7
The categories of this paper are: hep-th
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The categories of this paper are: q-bio
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The categories of this paper are: hep-ex
36
The categories of this paper are: cmp-lg
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The categories of this paper are: comp-gas
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The categories of this paper are: astro-ph
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The categories of this paper are: hep-ph
24
The categories of this paper are: dg-ga