A cognitive function test (such as remembering a password or solving a puzzle) is not required for any step in an authentication process unless that step provides at least one of the following:
- Alternative: Another authentication method that does not rely on a cognitive function test.
- Mechanism: A mechanism is available to assist the user in completing the cognitive function test.
Don’t make people recognize objects or user-supplied images and media to log in.
Some people with cognitive disabilities can't do puzzles, including identifying objects and non-text information they previously supplied.
WCAG Failure F109: Preventing password or code re-entry in the same format.
Using object recognition or personal content in the authentication process.