How many fingerprints can be stored on iPhone 5s?
Touch ID makes it possible to secure the iPhone with a fingerprint in addition to entering a four-digit passcode. This can save time and effort, making unlocking iOS as simple as placing a finger on the home button.
Touch ID will store up to 10 individual fingerprints. Although there have been reports of a way to store more fingerprints thanks to a quirk in how the Touch ID software works.