neo My plan is to protect the folders only with a password. Is it possible to use only the password without the user input?
I'm not 100% sure, but I don't think it's possible because session-based HTTP authentication with PHP seems to require both
PHP_AUTH_PW. Also, it's not really productive in terms of security, because any hacker only needs to find the right password instead of a combination username/password.
Also, do you mean you would like to protect each folder with different passwords? This is not currently possible, as the login is to access the application, regardless of folders. If we want to add logins-per-folder, we need to integrate CMS-behavior and store logins for folders somewhere.
Sorry, but password-only login is not a feature, and I don't think it will be.