The plugin allows for two CAPTCHA options in the registration process:
- Really Simple CAPTCHA
In order to use reCAPTCHA, you will need to provide an API key (available here).
Turning on reCAPTCHA in the plugin options will add an options tab specifically for the CAPTCHA details.
IMPORTANT: You MUST provide an API key if you turn this on. The CAPTCHA will not display if you have not entered an API key, but the registration form will consider it a required entry, thus throwing the user an error when trying to register.
There are several themes from which to choose when using the CAPTCHA form.
Really Simple CAPTCHA
Use of Really Simple CAPTCHA is really simple. However, you will need to have the Really Simple CAPTCHA plugin installed in order to use it.
Once enabled in the plugin’s main options, you can customize the CAPTCHA in the CAPTCHA tab. You can specify the characters used in the image, the number of characters, image dimensions, font color, background color, font size, width between characters, and the type of image that is used.
Notes about CAPTCHA
CAPTCHA was never intended to be a “security device.” Enabling the WP-Members CAPTCHA settings only applies CAPTCHA to the registration form to prevent spam registrations. It does not apply to the login form.