blocking multiple logins

Started by sunil, February 28, 2011, 12:27:15 PM



       The password_protech.php is excellent..million thanks to the developer..

  I need help in modifying this code so that I can block the password sharing by the users. something like if the first user has logged in and a second user tries to login with the same password and username (while the first user has not logged out ),I should be able to say that second user can not be logged in .

Thnaks in advance...