php - on captcha-code and best-practices implementation -


i had discussion friend using captcha-code , it's implementation, here come out discussion:

  • it usefull in preventing brute-force login attemps;
  • it can circumvented;
  • it not user-friendly;
  • a approach of it, hard implement;

i want know geeks best-practices of implementing captcha-code in cms system.

as always, thank's time.

for codeigniter created recaptcha library , recaptcha view adding our sites simple. google's recaptcha implementation easy integrate.

http://www.google.com/recaptcha


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