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Re: Facebook CAPTCHA verification, when is account verification required (for social media accessibility study)

for

From: John E Brandt
Date: Apr 28, 2011 9:21AM


I've never seen this. I have been asked to re-insert username and password,
but never a CAPTCHA. G-mail does the same thing and when you try to access
your iTunes from a different machine, it will require you to re-enter the
security number from the back of your credit card.

Granted I have only traveled around the US.

John E. Brandt
www.jebswebs.com
<EMAIL REMOVED>
207-622-7937
Augusta, Maine, USA

-----Original Message-----
From: <EMAIL REMOVED>
[mailto: <EMAIL REMOVED> ] On Behalf Of Birkir R.
Gunnarsson
Sent: Thursday, April 28, 2011 12:15 AM
To: WebAIM Discussion List
Subject: [WebAIM] Facebook CAPTCHA verification, when is account
verification required (for social media accessibility study)

Hi everyone and sorry if this seems very off topic.

I am participating in a study of m.facebook.com and other Facebook
accessibility alternatives for visually impaired users.
We have been wondering when Facebook requires users to verify their accounts
using CAPTCHA and what rules apply.
Of course they do when they create their account in, but, in my own
experience, Faceook also requires account verification whenever a user
changes locations significantly (I have experienced this when traveling from
NC to California and of course when travelling within Europe).
I do not know precisely how they do this, some type of DNS look up, or what
criteria they use, but if someone has actually worked with this and can
point me to a page with rules on when users will be required to verify their
account (by using CAPTCHA) it would be a very useful information tidbit for
the paper.
Thanks everyone.
-Birkir