Handling multiple instances of the Client Browser

[pckumaran]

Dear friends
I am facing this problem.We are running an ASP site where we want to prevent users from opening our site from within multiple browsers. Can anybody help me.
pckumaran

[acoder]

There's no reliable client-side way of handling this. The user could just turn JavaScript off. You can look at server-side solutions, e.g. logging the user, but I can't see what great problem there would be if the user accessed the site uses two browser instances.