You can set up voluntary user registration on your web site. This function has nothing to do with restricted access. Logged in users do not have to enter their name, address, and other data each time they fill a form on the site - this data is automatically inserted into the appropriate text fields of the form (for example, when posting to blog or buying in e-shop).
Note: To prevent automated registration, users will be required to enter a confirmation code to be able to register on your site.
To set up registration on your site:
Note: If you disable registration and do not remove the registration page from your site structure, your site visitors will still be able to access this page, but will not be able to log in using their existing account.
When a site visitor accesses the registration page, they are offered to register or log in using their existing account.