The twitch platform is developed for gamers and good content creators. If you also want to become a content creator and earn money from that. You will need to login in Twitch account. To do so Twitch uses a QR code scanning system. So how do you scan a QR code on Twitch? simply link your Twitch account to PlayStation Network by following the directions on your screen and scanning the QR code, And also use the code provided to twitch. tv/activate. For more information read this article.