Re: Ticketmaster.com and Word Images
| From: | Chris Shiflett | Date: | Thu, 31 Jul 2003 15:04:09 +0000 |
| Subject: | Re: Ticketmaster.com and Word Images | ||
| References: | 1 | Groups: | php.general |
| Request: | Send a blank email to php-general+get-157746@lists.php.net to get a copy of this message | ||
--- John Manko <xerid@adelphia.net> wrote:
> Does anyone know how sites like Ticketmaster.com creates
> the "Word Image" used for ticket purchase verification?
There are different ways for doing this. The simplest is to generate the image
yourself, and you can use a pseudo-caching method to pull them statically if
they are not already generated.
This method can still be automated, but it is at least more difficult than
writing a simple script, as it requires some OCR. If you want to go the extra
mile, check out this site:
http://www.captcha.net/
gimpy-r is what Yahoo! uses for their registration. These images are extremely
difficult to reliably read with a computer program, so they offer much stronger
protection against automated attacks.
If you specifically want to know what TicketMaster/CitySearch uses, you should
ask on the mod_perl mailing list, because a few of those guys work there.
Hope that helps.
Chris
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