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If you want to limit something to programmers, I think one idea would be to ask them to run a command, giving a linux and a windows possibility, and copy/pasting the result.



Yeah, something like curl <captchascipt> | sh !

Oh wait..


exactly... maybe just curl <url> | pbcopy

and the server only serves to non-browser useragents


windows ships with curl nowadays so this may not be an effective deterrent!




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