Hbomax activation code is a type of passcode used to access the service. In this section I'll show you with how you activate hbomax/tvsignin:Start the HBO Max app. You can sign in by clicking the sign in icon on the device.Then, you'll see the 6-digit code pop up onto your computer screen. Keep the code handy for reference later.Log into hbomax tvsignin from your computer, Mac or mobile device.Enter the HBO maximum activation code visible on the smart TV.Now, you'll be taken back to the registration page.Register an account to access your HBO max account. You will need those same credentials for login.Begin streaming along with the person you are watching.