PracticeCognitive DefenseOne scored question.You receive a call in what sounds unmistakably like your grandchild's voice, distressed, asking for bail money. What does the voice establish?Identity, since voices cannot be convincingly faked in real timeThat the call originated from their phoneIdentity, if they also know family detailsNothing — a familiar voice is no longer evidence of identityKeys 1 to 4Tested in The Five Mechanics
