The Apple ID confirmation code is a six -digit number that is notified to the sign -in terminal with the same Apple ID when there is a device for signing in the Apple service.The dialog that requests the Sign -in to enter the Apple ID confirmation code is displayed, so enter a 6 -digit number there to complete the "2 factor authentication", and the device is allowed to sign in.。
For example, when an iPhone and Mac signed in with a common Apple ID, iCloud on a Mac web browser.If you try to sign in to COM, you will be notified to the iPhone that there is a device that requires sign -in, and if you are allowed, you will see a 6 -digit number.Unless the iPhone and Mac owner have the same person or a close relationship, you can not know the 6 -digit number, so you can ensure safety.
However, there is a high possibility that enthusiastic Apple fans have two Macs and iPads, not the iPhone and Mac.Most users do many Apple devices with one Apple ID, as signing in to iCloud with a common Apple ID has a greater advantage, such as synchronizing the app status.
In that case, what happens to the sign -in request notification is to be notified at once to the device signed in to iCloud.When there are multiple Macs or iPads in the same room, iCloud on the iPhone.If you try to sign in to COM, you will receive a notification almost at the same time.
Apple ID confirmation code is not good unless it is an iPhone, but there are several conditions, such as the system (iOS and macOS).If the device displayed on the "Settings" → "Apple ID" screen is displayed, "This device can be used to receive the Apple ID confirmation code as a reliable device", the Apple ID confirmation code.You can receive it.