It is meticulously designed, engineered, and crafted.

But it's the remarkable innovation inside the iPhone 5s

that sets a new precedent.

It's not just rampant technology for technology's sake;

every single component, every process

has been considered and measured

to make sure that it's truly useful

and that it actually enhances the user's experience.

This care, this consideration

extends to how we protect all of the important information

that you actually carry with you on your iPhone.

It's what led us to create Touch ID.

Your fingerprint is one of the best passwords in the world.

It's always with you, and no two are exactly alike.

So it made perfect sense

to create a simple, seamless way to use it as a password.

With just a touch of your Home button,

the Touch ID sensor quickly reads your fingerprint

and automatically unlocks your phone.

You can even use it to authorize purchases through our stores

for music, movies, TV shows, apps, and books.

Setting up Touch ID to recognize your fingerprint is easy,

and every time you use it,

it gets better at reading your print.

It can read multiple fingerprints

and read them in any orientation.

The technology within Touch ID

is some of the most advanced hardware and software

we've put in any device.

The button itself is made from sapphire crystal,

one of the clearest, hardest materials available.

This protects the sensor and acts as a lens

to precisely focus it on your finger.

The steel ring surrounding the button detects your finger

and tells Touch ID to start reading your print.

The sensor uses advanced capacitive touch

to take in essence

a high-resolution image of your fingerprint

from the subepidermal layers of your skin.

It then intelligently analyzes this information

with a remarkable degree of detail and precision.

It categorizes your print by one of three basic types:

arch, loop, or whorl.

It maps individual details in the ridges

that are smaller than the human eye can see.

It even inspects minor variations in ridge direction,

caused by pores and edge structures.

Touch ID uses all this

to provide the most accurate match

and a very high level of security.

All fingerprint information is encrypted

and stored inside the secure enclave in our new A7 chip.

Here it is locked away from everything else,

accessible only by the Touch ID sensor.

It's never available to other software,

and it's never stored on Apple servers

or backed up to iCloud.

Touch ID defines the next step of how you use your iPhone,

making something as important as security

so effortless and so simple.

We believe that technology is at its very best,

at its most empowering, when it simply disappears.