Face ID and Touch ID

Question 1

What are the three category types a fingerprint can be classified as?

Answer 1

Arch, Loop, Whorl

Question 2

How does Secure Enclave store fingerprint information?

Answer 2

As a mathematical representation

Question 3

How many attempts can be made using Touch ID?

Answer 3

Five, then a password will have to be entered

Question 4

How many fingerprints can be enrolled per user?

Answer 4

Three

Question 5

How many fingerprints can be enrolled system wide?

Answer 5

Five

Question 6

How does Secure Enclave secure fingerprint data?

Answer 6

Encrypted, stored on disk with a key only Secure Enclave has access to.

Question 7

What is first required before being able to set up Touch ID?

Answer 7

A passcode must first be set

Question 8

What are some scenarios that will prompt a manual password when using Touch ID?

Answer 8

• After restarting device
• 48 hours have passed since last log in
• To add or delete a fingerprint
• To change password and security settings
• 5 chances limit reached
• After you log out of a Mac

Question 9

How does Face ID store your face?

Answer 9

Mathematical representation that is stored and accessed by Secure Enclave.

Question 10

How many face profiles can be stored?

Answer 10

2

Question 11

How many attempts before you have to enter a passcode?

Answer 11

5

Question 12

What conditions will require you to enter a passcode instead of using Face ID?

Answer 12

Powering on or restarting
48 hours since last attempt
Passcode hasn’t been used for the last 6 ½ days and Face ID hasn’t been used in last 4 hours
Device receives a lock command
5 unsuccessful attempts
After power off / Emergency SOS