Use Case 2.1 Setup a remote PIN and biometric unlock

Overview

Aspect	Description
Summary	The user chooses and confirms a secure 6-digit remote Personal Identification Number (PIN) for the app, and enables biometric unlock if supported and desired.
Goal	Securing the App with PIN and optionally biometrics.
Preconditions	None
Postconditions	Remote PIN is configured. If selected, biometric unlock is configured.
Triggered by	User completes UC1.1 Introduce the app
Additional Documentation	Wallet creation
Possible errors	No internet Server unreachable Device incompatible
Logical Test Cases	LTC61 PIN entries do not match, try again LTC62 PIN entries do not match, choose new PIN LTC63 PIN entry does not conform to policy LTC66 Setup PIN Happy flow LTC67 Setup PIN fails device does not pass app and key attestation LTC74 User skips setting up biometrics LTC75 Device does not support biometrics

Flow

#	Description	Next
1	PRIMARY SCENARIO
1.1	System displays screen ‘Choose PIN’ Input: 6 digits (0-9) PIN field, in-app keyboard Actions: Back, Info
1.1a	User enters PIN	1.2
1.1b	User selects Back	Back
1.1c	User selects Info	Go to: UC9.2 Get app information
1.2	System validates entered PIN satisfies PIN policy Duration: 0.0 - 0.1 seconds
1.2a	Case: PIN matches PIN policy	1.3
1.2b	Case: PIN does not match PIN policy	2
1.3	System displays screen ‘Repeat PIN’ Input: 6 digits (0-9) PIN field, in-app keyboard Actions: Back, Info
1.3a	User enters PIN	1.4
1.3b	User selects Back	Back
1.3c	User selects Info	Go to: UC9.2 Get app information
1.4	System validates PINs match, displays loading message Duration: 0.0 - 0.1 seconds
1.4a	Case: PINs match	1.5
1.4b	Case: PINs do not match (first time)	3
1.4c	Case: PINs do not match (second time)	4
1.5	System executes account setup, displays loading message Duration: 0.0 - 1.0 seconds
1.5a	Case: Account setup succeeds	1.6
1.5b	Error: Device insecure	Error flow: Device insecure
1.5c	Error: No internet	Error flow: No internet
1.5d	Error: Server unreachable	Error flow: Server unreachable
1.6	System determines whether device supports biometrics Duration: 0.0 - 0.1 seconds
1.6a	Case: Device supports biometrics	1.7
1.6b	Case: Device does not support biometrics	1.9
1.7	System displays screen ‘Configure Biometrics’ Message: Do you want to unlock the app with Face ID/Fingerprint? Actions: Enable, Skip, Info
1.7a	User selects Enable	1.9
1.7b	User selects Skip	1.9
1.7c	User selects Info	Go to: UC9.2 Get app information
1.8	Operating system prompts user for biometric authentication
1.8a	User confirms with biometric authentication	1.9
1.8b	User rejects biometric authentication	1.7
1.9	System displays screen ‘Confirm PIN/biometric setup’ Message: Your NL Wallet is secured Actions: Next
1.9a	User selects Next	Go to: UC3.1 Obtain PID
2	WHEN PIN DOES NOT SATISFY POLICY (TOO SIMPLE)
2.1	System displays prompt ‘PIN too simple’ Actions: OK
2.1a	User selects OK	1.3
3	WHEN PINs ARE NOT EQUAL (FIRST TIME)
3.1	System displays prompt ‘PIN is different, retry’ Actions: Try again
3.1a	User selects Try again	1.3
4	WHEN PINs ARE NOT EQUAL (SECOND TIME)
4.1	System displays prompt ‘PIN is different, start over’ Actions: Start over
4.1a	User selects Start over	1.1