jCaptcha : Accessible human validation

Davidson, Matthew and Renaud, Karen and Li, Shujun (2014) jCaptcha : Accessible human validation. In: 14th International Conference on Computers Helping People with Special Needs, 2014-07-09 - 2014-07-11. (https://doi.org/10.1007/978-3-319-08596-8_19)

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Abstract

CAPTCHAs are a widely deployed mechanism for ensuring that a web site user is a human, and not a software agent. They ought to be relatively easy for a human to solve, but hard for software to interpret. Most CAPTCHAs are visual, and this marginalises users with visual impairments. A variety of audible CAPTCHAs have been trialled but these have not been very successful, largely because they are easily interpreted by automated tools and, at the same time, tend to be too challenging for the very humans they are supposed to verify. In this paper an alternative audio CAPTCHA, jCAPTCHA (Jumbled Words CAPT- CHA), is presented. We report on the evaluation of jCAPTCHA by 272 human users, of whom 169 used screen readers, both in terms of usability and resistance to software interpretation.

ORCID iDs

Davidson, Matthew, Renaud, Karen ORCID logoORCID: https://orcid.org/0000-0002-7187-6531 and Li, Shujun;
  • Item type:Conference or Workshop Item(Paper)
    ID code:82856
    Dates:
    Date
    Event
    11 July 2014
    Published
    Notes:Davidson, M., Renaud, K., Li, S. (2014). jCAPTCHA: Accessible Human Validation. In: Miesenberger, K., Fels, D., Archambault, D., Peňáz, P., Zagler, W. (eds) Computers Helping People with Special Needs. ICCHP 2014. Lecture Notes in Computer Science, vol 8547. Springer, Cham. https://doi.org/10.1007/978-3-319-08596-8_19
    Subjects:Science > Mathematics > Electronic computers. Computer science
    Department:Faculty of Science > Computer and Information Sciences
    Depositing user: Pure Administrator
    Date deposited:20 Oct 2022 13:01
    Last modified:11 Nov 2024 17:07
    URI:https://strathprints.strath.ac.uk/id/eprint/82856
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