DWP biographical ID test

Identity verification and standards of evidence
Biographical Test/Bio Test  (pdf)

Extract:

“If the claimant does not have sufficient evidence to verify identification they must undergo biographical security questions / checks. The biographical test is considered as satisfied by the claimant if they successfully answer 3 random security questions out of a maximum of 5 drawn from available biographical data. At least one must be high level.”

Note: During coronavirus emergency Bio Tests are conducted over the phone