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Re:

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From: tedd
Date: Mar 15, 2007 9:50AM

At 10:25 AM +0000 3/15/07, Alastair Campbell wrote:
>Tedd wrote:
>> I would be interested in your opinion, and others, of this captcha.
>> http://sperling.com/examples/captcha/index.php
>
>And for those who can't hear?

One problem at a time. There are different types of CAPTCHA's, as you
can see here.

http://www.sperling.com/examples/assorted-captcha/index.php

I think a combination of captchas could cover most disabilities.

As for OpenID, I have an account with them, but I find the
registration a bit complicated. In addition, you can't get the logon
name that you might want and the technique is not wide-spread enough
to provide universal access. IMO, a lot of web sites have to
participate to make it effective.

I'm not sure why an opt-in technique is not a reasonable answer for
that type of problem. After all, if a user wants to post something,
then the user submits their email address to a form and a
logon/password is emailed to them thereby identifying that: a) the
user has at least an email address; b) and email address is attended;
c) and the user has to return, and logon to post something. This is a
series of action that a bot probably wouldn't preform.

But, perhaps there's something wrong with this technique that I am unaware.

Cheers,

tedd
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