Authenticate login on same system

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Authenticate login on same system

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April 20th, 2006, 09:14 AM

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Authenticate login on same system

I have created session. In that i implement the service if the user login from another system then the current login is expired. But now i want to implement such system that when the user want to login on the same system second time then it should give message that you are already login. So if anybody know the logic or the code please help me to do so

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