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Verification image ?

Walter Chen
Greenhorn

Joined: Jan 10, 2003
Posts: 25
Hi, not sure it is appropriate to post on this forum (but probably more relevant here than others) -- does anyone know if there is any open source tool to generate "verification images"? By that I mean the kind of automatically generated images which contain a randomized string of alphanumeric characters so that the user has to type in the string manually, thus preventing robotic registrations, postings, etc.

Thanks in advance,
Walter
Ulf Dittmer
Marshal

Joined: Mar 22, 2005
Posts: 42359
    
  64
There are plenty such projects. The word to Google for is "captcha".


Ping & DNS - my free Android networking tools app
 
It is sorta covered in the JavaRanch Style Guide.
 
subject: Verification image ?