"Evaluating existing audio CAPTCHAs and an interface optimized for ..."

Jeffrey P. Bigham, Anna Cavender (2009)

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DOI: 10.1145/1518701.1518983

access: closed

type: Conference or Workshop Paper

metadata version: 2018-11-06

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Jeffrey P. Bigham, Anna Cavender:
Evaluating existing audio CAPTCHAs and an interface optimized for non-visual use. CHI 2009: 1829-1838

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