Touch ID is a fingerprint recognition feature introduced in the iPhone 5S that allows users to unlock their phone and make purchases with a fingerprint instead of a passcode. It is built into the home button using a fingerprint sensor. Fingerprint data is stored securely on the phone's processor and not on Apple servers. The document provides details on the history and acquisition of the technology by Apple, the hardware and sensor design, and how the security and privacy of fingerprints is maintained.

1. Touch ID in iphone 5
Prepared by:
Virendra Singh
Thakur
(131060753022)

2. Outlines
• Introduction
• History
• Hardware
• Security and privacy

3. Introduction
• Touch ID is a fingerprint recognition feature,
designed and released by Apple Inc., and
currently only available on the seventh
generation of iPhone, the iPhone 5S.
• Apple says Touch ID is heavily integrated
into iOS 7 on supported devices, allowing users
to unlock their phone, as well as make
purchases in the various Apple digital media
stores (iTunes Store, the App Store, or
iBookstore.

4. History
• Only a few other smartphone makers have built
fingerprint scanning into their phones, as with
the Motorola Mobility Atrix 4G in 2011, although
none of them were implemented into the
operating system like Touch ID.
• The iPhone 5S is the first phone on a major US
carrier since then to feature the technology.

5. History (Contd..)
• In 2012 Apple acquired AuthenTec, a company
focused on fingerprint reading and identification
management software, for $356 million. Since
then, people have expected a fingerprint reading
feature.

6. Hardware
• Touch ID is built into the home button, which is
now built of laser-cut sapphire crystal so as not
to scratch (which would prevent Touch ID from
working).It features a stainless steel detection
ring to detect the user's finger without pressing
it.

7. Hardware (Contd..)
• The sensor will use capacitive touch to detect
the user's fingerprint. The sensor has a
thickness of 170 µm, with 500 pixels per inch
resolution. The user's finger can be oriented in
any direction and it will still be read.

8. Hardware Design

9. Security and privacy
• Fingerprint data is stored on the secure enclave
of the Apple A7 processor that is inside the
device itself, and is not stored on Apple servers,
nor on iCloud, and will not be available to third
parties.
• If the user's phone has been rebooted, or has
not been unlocked for 48 hours, only the user's
passcode, not a fingerprint, can be used to
unlock the phone.

10. Using Touch ID instead of your
passcode
• You can use Touch ID to unlock your phone
without having to enter your passcode every
time. There are two ways you can unlock with
Touch ID:
• Press the Home button once to wake iPhone 5s
and keep your finger lightly on the Home button.
• Press the Sleep/Wake button once to wake
iPhone 5s, and then touch your finger lightly on
the Home button.

11. Using Touch ID instead of your
passcode
• If Touch ID doesn't recognize your finger, you'll
be asked to try again. After three attempts, you'll
be given the option of entering your passcode.
After two more tries, you will need to enter your
passcode.

12. References:
• Geltz, B.R. ; Berlier, J.A. ; McCollum, J.M.
• IEEE SoutheastCon 2010 (SoutheastCon),
Proceedings of the
• Digital Object
Identifier: 10.1109/SECON.2010.5453933
• Publication Year: 2010

13. Thank You..