What is Touch ID?

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Touch ID is a security feature on the newest iPads and iPhones. A fingerprint sensor located on the home button is used to capture the fingerprint and compare it to fingerprints saved within the device. This fingerprint can be used to unlock the device, bypassing any passcode in the process. It can also be used to verify purchases in the App Store or iTunes, negating the need to enter in the Apple ID password when purchasing apps, music, movies, etc.

The iOS 8 update opened the Touch ID feature up to third-party apps, which means apps like ​E-Trade can now use Touch ID to verify the identity of the person.

In order to use Touch ID, you must first allow the device to capture and save your fingerprint, usually using a thumb for the fingerprint. Once saved, the iPad or iPhone can compare this fingerprint each time the thumb is pressed to the fingerprint sensor on the home button. The iPad can save multiple fingerprints, so both thumbs can be captured, and if the iPad is used by multiple people, a thumbprint from each person can be saved.

Devices that have Touch ID will attempt to save a new fingerprint during the setup process. A new fingerprint can also be added in Settings. Find out more about scanning your fingerprint into your device.

Touch ID is available on the iPad Air 2, iPad Mini 3, iPhone 5S, iPhone 6, iPhone 6S.

How to Lock the iPad With a Passcode or Password