On 9/26/07, John L <[EMAIL PROTECTED]> wrote: > > >> I have a list of 250,000 people here (scraped off web sites) to whom > >> I'd just love to make recorded phone calls. Can I use your protocol > >> to ask them all if it's OK? If not, why not, and how are you going to > >> stop me? > > > > Using a Turing test (CAPTCHA) for example. > > http://en.wikipedia.org/wiki/Captcha > > There are many well known ways to defeat CAPTCHAs, unfortunately.
It depends on the CAPTCHA you are using and your application. You may want to take a look at the following talk? http://www.youtube.com/watch?v=dtFroEJN1nI regards, pars R's, > John >
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