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it could potentially be used to circumvent an important PayPal fraud-prevention scheme that uses a GIF with numbers and letters

I must say that I find that highly unlikely. Take a look at Paypal registration to see an example of the images generated - even though I am a firm beleiver that anything can be written in perl, eventaully, this really funny little trick isn't coming close to breaking the paypal images. Nor was it intended to, of course. :)

Reading a character in an image is old news as such, so paypal uses a lot of different "blurring" techniques, such as drawing lines at random intervals, moving the characters inside the image and using a font that is hard to interpret - and probably other things too.

Just so any paypal users can sleep a little tonight...


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It is pitch black. You are likely to be eaten by a grue.

In reply to Re: Re: A little fun with merlyn by Dog and Pony
in thread A little fun with merlyn by jcwren

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