Recently, the number of online services that perform "two -step authentication" has increased.Two -step authentication is a mechanism that is used to check the user again in various ways, in addition to ID/password, and is used as "2 factor authentication" in the Apple ID.
In the case of smartphones, two -step authentication that takes advantage of the features of mobile phones carried by only the person is used.When the first step in the first step in the service that uses a two -stage authentication, the service side sends a short message (SMS) to the person's mobile phone number, which is the service side, and corrects it.If you can input, you will be presumed to be the person and the second step in sign -in success.
The SMS will be received in the "Message" app on the iPhone, so when the first stage sign -in is completed, switch the app to "Message", open the SMS and check the confirmation code.Return to the sign -in screen and enter that code, you have to do a little troublesome operation.
"Security code automatic input" was introduced during iOS 12 that solved the troublesome task related to two -step authentication.If you can receive SMS with iOS 12 or later iPhone, you can prepare OK, and just wait in the app that signs in the first stage and automatically enter the confirmation code.Normally, if you wait for about 10 seconds, a notification will appear along with the incoming call of SMS, and immediately after the software keyboard, a confirmation code will be displayed on the "from the message from the message". Tap it to handle the confirmation code.It has the same effect as when you do.
If you do not know this function, if you are asked for a confirmation code, you will need to switch the screen to the "Message" app ...If you request a confirmation code in the app that performs a two -step authentication, wait for the SMS incoming call to arrive.
