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TapSongs: Tapping Rhythm-Based Passwords on a Single Binary Sensor

Summary: TapSongs: Tapping Rhythm-Based Passwords on a
Single Binary Sensor
Jacob O. Wobbrock
The Information School
DUB Group
University of Washington
Seattle, WA 98195-2840
TapSongs are presented, which enable user authentication
on a single "binary" sensor (e.g., button) by matching the
rhythm of tap down/up events to a jingle timing model
created by the user. We describe our matching algorithm,
which employs absolute match criteria and learns from
successful logins. We also present a study of 10 subjects
showing that after they created their own TapSong models
from 12 examples (< 2 minutes), their subsequent login
attempts were 83.2% successful. Furthermore, aural and
visual eavesdropping of the experimenter's logins resulted
in only 10.7% successful imposter logins by subjects. Even


Source: Anderson, Richard - Department of Computer Science and Engineering, University of Washington at Seattle
Wobbrock, Jacob O. - Information School, University of Washington at Seattle


Collections: Computer Technologies and Information Sciences