Solmetra FormValidator
Publisher
PHP class used to validate web forms against automated submissions using randomly distorted image.
Product Details
SOLMETRA FormValidator is a PHP class used to validate web forms against automated submissions. The process involves generating and displaying a distorted image of secret phrase which is readable to humans but completely incomprehendable to machines - even to OCR programs. This protection mechanism is known as CAPTCHA (completely automated public Turing test to tell computers and humans apart).
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User Reviews
Please rate the listing and tell the world know what do you think about the listing.
Perfect. This is the CAPTCHA you'll want
Reviewed byAnonymousonFri, 10th February 2006
PHP with GD support required. I plugged in a half-dozen CAPTCHAs but SOLMETRA worked instantly right out of the box. I selected my own background grid and added my own fonts and resized the image -- all very easily done. The image uses random type faces twisted at random angles to thwart robotic readings. You REALLY need a Turing Test on your feedback and contact-me forms to help avoid email header injection attacks. Solmetra is the one I like best. It's the one I use in my form2mail program.
