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WCAG 3.3.8

Accessible Authentication (Minimum)

  • Level AA
  • WCAG 2.2
  • Principle 3: Understandable
  • EN 301 549: 9.3.3.8

In short

A cognitive function test is not required for authentication unless an alternative exists.

How Percelia tests it

Percelia detects some cases automatically with rules; the rest needs AI or human judgment. Anything ambiguous goes to human review.

This criterion is judgment-bound and is always put to a human reviewer at Percelia, even at high confidence.

Official source

W3C Understanding document (w3.org)

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