Login block
From MoodleDocs
The Login block provides logged out users an in-site area to enter their Username and Password and login, Create a new account or retrieve/reset their password.
This block is only of use where you are not forcing users to login before viewing any part of your site ( Site_policies#Force_users_to_login )
This block can only be added to your Moodle site via the front page but within the Block editing area, via the Block display Page contexts option , you can set this block to:
- display on the front page only; or
- display on the front page and any pages added to the front page; or
- display throughout the entire site