A11ying with Sanna - Web Content Accessibility Guidelines a guide to the accessibility requirements
2 Operable

2.2.5 Re-authenticating

Conformance level: AAA
Criterion released in WCAG version: 2.0

Official description of the success criterion

When an authenticated session expires, the user can continue the activity without loss of data after re-authenticating.

What to do?

Allow users to re-authenticate without losing data.

Why is it important?

Prevents data loss for users with slow response times.

More about this criterion elsewhere