Sounds like an interesting experiment!
How about using the username as the password?
Then see this discussion: https://moodle.org/mod/forum/discuss.php?d=5069
Richard
Re: Alternate login authentication only basis on UserName, Password not needed
by Richard Jones -
Number of replies: 2
In reply to Richard Jones
Re: Alternate login authentication only basis on UserName, Password not needed
by Anirudha Barde -
I have checked link you shared but I only want to login to moodle on basis of UserName if UserName is exists in moodle db then allow that user to login.
Or How can i modify "authenticate_user_login" method ? Or where "authenticate_user_login" method is located in moodle ?
In reply to Anirudha Barde
Re: Alternate login authentication only basis on UserName, Password not needed
by Richard Jones -
Understood. If you modify the login form to show only the username, then you can set the password to be the same internally.
Setting the password to be the same as the username would be done when registering the user - you haven't explained how you register users. One easy way to achieve that would be to have an external registration page tied to a non-Moodle database which is then used to authenticate.
May I ask why you want to do something like this? Is it perhaps for very young children? On the face of it it sounds, shall we say, unsafe. Perhaps there are other solutions to your challenge?