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ADAPTCHA

CAPTCHAs are an important tool for preventing automated attacks against online
systems but they can be a source of friction (undesirable delay and
inconvenience) in the user experience. Good interface design strives to minimize
potential sources of friction.

Adaptcha reduces user experience friction by presenting CAPTCHA tests which
users are likely able to solve quickly and accurately. It records metrics of
user performance including success rates and completion times. These values are
compared against CAPTCHA metadata to adaptively select CAPTCHAs which experience
suggests the user will find easiest to solve, providing a low friction user
experience.


RESULTS

In testing, Adaptcha's adaptive selection boosted human success rates by 8
percentage points and reduced the average completion time by 35%.


DEMOS

Try Adaptcha


PUBLICATIONS


CONFERENCE POSTERS

 1. B. M. Powell, R. Singh, M. Vatsa, and A. Noore, “Poster: Adaptcha: An
    Adaptive CAPTCHA for Improved User Experience,” at 38th IEEE Symposium on
    Security and Privacy, San Jose, CA, 2017. Abstract PDF Poster
    PDF Publisher's Website

 

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Dr. Brian M. Powell, Faculty Director
205 Armstrong Hall
94 Beechurst Avenue | PO Box 6109 | Morgantown, WV 26506-6109
P: 304.288.1549 | brian.powell@mail.wvu.edu
Lane Department of Computer Science and Electrical Engineering
Advanced Engineering Research Building
109 Research Way | PO Box 6109 | Morgantown, WV 26506-6109
P: 304.293.0405
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