Partial Flow 2.8 Validate entered PIN
Overview
Aspect |
Description |
---|---|
Summary |
The system validates a PIN entered by the user. Too many failed attempts causes the app to be temporarily or permanently blocked. This behaviour is configurable. |
Goal |
Preventing unauthorized access to and actions in the app. |
Preconditions |
None |
Postconditions |
Depends on the use case. |
Used by |
|
Parameters |
None |
Possible Results |
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Additional Documentation |
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Possible errors |
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Logical test cases |
Flow
# |
Description |
Next |
---|---|---|
1.1 |
System validates PIN, and applies PIN policy |
|
1.1a |
Case: Valid PIN when app not blocked |
Result: Valid PIN |
1.1b |
Case: App temporarily blocked |
5 |
1.1c |
Case: App permanently blocked |
9 |
1.1d |
Case: Invalid PIN (non-final round, first time) |
2 |
1.1e |
Case: Invalid PIN (non-final round, second time) |
3 |
1.1f |
Case: Invalid PIN (non-final round, third time) |
4 |
1.1g |
Case: Invalid PIN (non-final round, fourth time) |
5 |
1.1h |
Case: Invalid PIN (final round, first time) |
6 |
1.1i |
Case: Invalid PIN (final round, second time) |
7 |
1.1j |
Case: Invalid PIN (final round, third time) |
8 |
1.1k |
Case: Invalid PIN (final round, fourth time) |
9 |
1.1l |
Error: No internet |
Error flow: No internet |
1.1m |
Error: Server unreachable |
Error flow: Server unreachable |
2 |
WHEN PIN INVALID, NON-FINAL ROUND, FIRST TIME |
|
2.1 |
System displays prompt ‘Wrong PIN, retry’
|
|
2.1a |
User selects Close |
Result: Retry |
2.1b |
User selects Forgot PIN |
10 |
3 |
WHEN PIN INVALID, NON-FINAL ROUND, SECOND TIME |
|
3.1 |
System displays prompt ‘Wrong PIN, retry’
|
|
3.1a |
User selects Close |
Result: Retry |
3.1b |
User selects Forgot PIN |
10 |
4 |
WHEN PIN INVALID, NON-FINAL ROUND, THIRD TIME |
|
4.1 |
System displays prompt ‘Wrong PIN, retry’
|
|
4.1a |
User selects Close |
Result: Retry |
4.1b |
User selects Forgot PIN |
10 |
5 |
WHEN APP TEMPORARILY BLOCKED (NON-FINAL ROUND, FOURTH FAILED ATTEMPT) |
|
5.1 |
System displays screen ‘Temporarily Blocked’
|
|
5.1a |
User selects Delete Wallet |
Go to: UC9.4 Wipe all app data |
5.1b |
User selects Back |
Result: Back |
5.1c |
User selects Help |
Go to: UC9.6 Get help |
5.1d |
User selects Forgot PIN |
10 |
5.1e |
Event: timer expires |
Result: Retry |
6 |
WHEN PIN INVALID, FINAL ROUND FIRST TIME |
|
6.1 |
System displays prompt ‘Wrong PIN, retry’
|
|
6.1a |
User selects Close |
Result: Retry |
6.1b |
User selects Forgot PIN |
10 |
7 |
WHEN PIN INVALID, FINAL ROUND SECOND TIME |
|
7.1 |
System displays prompt ‘Wrong PIN, retry’
|
|
7.1a |
User selects Close |
Result: Retry |
7.1b |
User selects Forgot PIN |
10 |
8 |
WHEN PIN INVALID, FINAL ROUND THIRD TIME |
|
8.1 |
System displays prompt ‘Wrong PIN, retry’
|
|
8.1a |
User selects Close |
Result: Retry |
8.1b |
User selects Forgot PIN |
10 |
9 |
WHEN APP PERMANTLY BLOCKED (FINAL ROUND, FOURTH FAILED ATTEMPT) |
|
9.1 |
System displays screen ‘App is Blocked’
|
|
9.1a |
User selects Delete Wallet |
Go to: UC9.4 Wipe all app data |
9.1b |
User selects Help |
Go to: UC9.6 Get help |
10 |
RECOVER FROM FORGOTTEN PIN |
|
10.1 |
System displays forgot PIN screen
|
|
10.1a |
User selects Delete Wallet |
Go to: UC9.4 Wipe all app data |
10.1b |
User selects Back |
Result: Back |