Question

How many sessions will be created if the user uses two different browser windows?

Answer 1

Per default, there is no way to have different sessions in the same browser window. The sessions are always shared trough all tabs. If two different Sessions are enough, you could use a privat/incognito browser window. A other solution could be to use HTML 5 SessionStorage for your variables.

Answer 2

only one web can be used for one user but if the user is doing it on two different devices then it can be done,,it also depends on the time