32 lines
1.2 KiB
TeX
32 lines
1.2 KiB
TeX
\subsection{Noisy Text}
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\subsubsection{Privacy}
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Excellent\\
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The method doesn't employ any tracking elements and works when used in anonymous
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networks like TOR\@.
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\subsubsection{Effectiveness}
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Bad\\
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The method relies on Optical Character Recognition (OCR) capabilities of human
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users. OCR technology is becoming increasingly sophisticated which would render
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this method ineffective in the future.
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Without OCR, this method can be bypassed using human-powered CAPTCHA farms with
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% TODO cite CAPTCHA farm cost analysis paper
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ease.
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\subsubsection{Accessibility}
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Bad\\
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Since the method relies on OCR, it is inaccessible to users with visual
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disabilities and the added noise poses challenges to users with cognitive
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disabilities. The noise sometimes makes the challenge unsolvable which results
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in failures for even users without any disabilities,
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\subsubsection{Accuracy}
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Good\\
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Success and failure are absolute states in this method. A solution that doesn't
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match the challenge text results in failure while a match is considered a
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success. But when using employing CAPTCHA farms for circumvention, the method
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fails absolutely.
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The method uses only text matches in its decision process. No other
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external factors are involved.
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