So i am trying to program a racing browser game. For the 3D racing experience i will import unity 3D application into my website. And for buying specific cars, tuning cars and so on, the website will do that job. I just can't wrap my head around how to hook unity with my website. My website is mostly written in PHP. I can't just load my unity application into my website. I must somehow make my unity application detect the browser's session ID (the user's account ID) so that it can load the user's current car in the application. Yes i know i can make Login form inside the unity application, but i don't want it to be that way. Is there a way to make my unity application detect which account was logged into the website, and log into that same account in the application?