For most of users, whenever they set up Touch ID, they run through the initial process of registering a fingerprint or two on their iPhone or iPad and do not think much beyond this process. However, many users want to run through the process again to register the same finger a few times with a view to making Touch ID detect their fingerprints faster.
There is a problem arising from this, for users who have registered multiple different fingers, if they forgot to name them, they cannot distinguish the registered fingerprints that Apple use: Finger 1, Finger 2, Finger 3,..and you cannot even distinguish which fingerprint corresponds to your actual fingers in Touch ID. Luckily, there is a simple trick to identify the fingerprint and shows you exactly which entry in Touch ID relates to what is being identified by the sensor.
Without further ado, we will walk you through how.
Step 1: Launch the Settings app and head to Touch ID & Passcode.
Step 2: Scroll down to the Fingerprints.
Step 3: Now place your finger on the Touch ID sensor and you will see the fingerprint that corresponds to finger. That fingerprint will highlight in gray briefly, fading in and out, in the list of the registered fingerprints.
This simple trick allows you to remove the registered fingerprints if you find it is not working properly, and then registering a fingerprint a few times. Plus, this is very helpful for using Touch ID in abnormal weather conditions such as the weather is too cold, too wet or even when skin dries out. We want to notice that as you add a new fingerprint to Touch ID, it’s recommended that you should name it.