Bye-Bye Password
What is it?
It is a combined login/registration system that doesn't require a password at all!
If you wish to facilitate users not to remember their password and register/login just be entering their email address, then the plugin will be helpful for you.
Features :-
1. By using this plugin, the registration process will become simpler and inviting.
2. Users need not to enter and remember their password for registration as well as for login.
3. A login link is sent to the email address everytime, to authenticate the user.
4. Login link expires, after your site's session configured at the backend is over.
Know more >> http://www.jpayplans.com/blog/item/password-login-we-will-make-it-a-history.html