AI & the web
Authentication
Checking that a person or system is who it claims to be.
In everyday use
A shop asks you to sign in before viewing an order.
What to keep in mind
Being signed in does not mean you have permission to do everything.
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Further reading
Original explanation and example by Perspectism. Further reading may cover the wider subject, rather than this exact wording. Edition updated 7 October 2026.
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