2 papers
cs.CR2021
"I have no idea what they're trying to accomplish:" Enthusiastic and Casual Signal Users' Understanding of Signal PINs
Daniel V. Bailey, Philipp Markert, Adam J. Aviv
We conducted an online study with Signal users on their understanding and usage of PINs in Signal. In our study, we observe a split in PIN management and composition stra…
cs.CR2020
This PIN Can Be Easily Guessed: Analyzing the Security of Smartphone Unlock PINs
Philipp Markert, Daniel V. Bailey, Maximilian Golla +2
In this paper, we provide the first comprehensive study of user-chosen 4- and 6-digit PINs (n=1220) collected on smartphones with participants being explicitly primed for device un…