If enabled, the system will automatically assign a unique, numeric ID code to you. You should continue to use your normal login ID to log in to the system. The purpose of the numeric ID code is to identify you to researchers in a way that does not reveal your identity or compromise your privacy. If this feature is enabled, you will see this ID code when you go to view your profile, as well as, in email confirmations and reminders about your upcoming study sessions. You should bring this ID code with you when you go to studies or when communicating with researchers, as they will only know you by your ID code and not your name.