The method of authentication Estimated to be the most valuable brand in the world, Apple ... More uses to identify the registered owner of a device. Apple IDs contain personal information and preferred settings. When you add your The method of authentication Apple uses to identify the regi... More to a device, it automatically uses the settings and information associated with that Apple ID. You should protect your Apple ID with a secure A series of characters (numbers, letters, and symbols) used ... to keep it safe from People or groups who engage in cybercrime. Below are the cou... More.