[tor-bugs] #10831 [Obfuscation/BridgeDB]: Captchas are not accessible for blind users

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#10831: Captchas are not accessible for blind users
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 Reporter:  PZajda                               |          Owner:  isis
     Type:  enhancement                          |         Status:  new
 Priority:  Medium                               |      Milestone:
Component:  Obfuscation/BridgeDB                 |        Version:
 Severity:  Normal                               |     Resolution:
 Keywords:  bridgedb-reportbug, isis2015Q3Q4,    |  Actual Points:
  isisExB, isisExC, bridgedb-ui                  |
Parent ID:                                       |         Points:
 Reviewer:                                       |        Sponsor:
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Comment (by unknown_artist):

 I am planning to use https://pypi.python.org/pypi/captcha for generating
 captchas. As per the documentation, we can do something like this for
 generating audio captchas :
 {{{
 from captcha.audio import AudioCaptcha
 audio = AudioCaptcha(voicedir='/path/to/voices')
 audio.write('aT2bXvw7','aT2bXvw7.wav')
 }}}
 The above code snippet will generate an audio captcha whose correct answer
 is aT2bXvw7
 The voice directory should contain single character named directories, for
 example :
 * a/
 * b/
 * c/
 These directories should contain 8 bit PCM .wav files. Each character
 directory may contain as many .wav files and one of them will be randomly
 chosen for captcha generation

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Ticket URL: <https://trac.torproject.org/projects/tor/ticket/10831#comment:13>
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