Play Framework HTML SCALA VIEW Sessions

Hello,

Can someone tell me which documentation i should read or use (about play framework) to :

Not allowed a user (A) to open an HTML (view page ex index.scala.html) if it is already opened from another user (B) This means that my configured page will be showed only for one user in same time, if this is user close the HTML page then someone else can open it …

Thank you so much