captcha

Working on drupal 7 captcha for adding refresh link

Drupal modules are plug and play. Download, Place, Enable, Configure .. thats it.

Make CAPTCHA in real life is quite a tedious job. But thanks to drupal community, you can get easily and place on your site. But with contributed module there is an issue, if you need some custom requirement, you need to understand all the code. Even a single change take more time.