- Success Criterion 3.3.8
- Conformance level AA
Puzzle CAPTCHA Gating Login With No Alternative Method
3.3.8 — Accessible Authentication (Minimum)
Scenario
Setting
An e-book reader's library page
What’s wrong
Puzzle CAPTCHAs (rotate image, slide to fit, math problems) gating login with no alternative.
Example
This shows up on an e-book reader's library page: puzzle CAPTCHAs (rotate image, slide to fit, math problems) gating login with no alternative.
Why it matters
People with cognitive disabilities and anyone who depends on password managers or paste. On an e-book reader's library page, this barrier means they get locked out of the account entirely.
How to test
Attempt to log in: if a puzzle CAPTCHA (rotate image, slide to fit, solve math) blocks the flow with no alternative, it fails.
How to fix
Login must work with paste and password managers — any cognitive test must have a non-cognitive alternative method.
Outcome
Corrected, an e-book reader's library page now lets a visitor use their password manager as normal.
Who is affected
People with cognitive disabilities and anyone who depends on password managers or paste.
Learn more
- Understanding Understanding document (opens in a new tab)
Related scenarios
- Password Field That Blocks Pasting or Splits the Code Up
- Password Field Scripted to Block Paste Entirely
- Password Manager Autofill Blocked by the Login Form
- Visual CAPTCHA Required With No Non-Visual Alternative
- One-Time Code Split Into Boxes That Reject a Pasted Code
- Displayed Code Required to Be Retyped With Copying Disabled