first i want to elaborate the scenario
it is like that when one user for example user A HAS USERNAME:ANURAG & PASSWORD: UITK
he is already login successfully in application he is surfing the webapplication.
THEN if another person B trying to login into the application by the use of person A username and pasword then during this i want that person B get a message like this THIS "U ARE ALREADY LOGIN " .
another user can not be login by using same userid and password when one user is already login.
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