Which of the following exemplifies the mode of biometric recognition known as negative matching?
Rejecting a voter who tries to register multiple identities to vote in the same election
Preventing one worker from signing into the workplace for another worker
Preventing a student from obtaining a lunch which has not been paid for
Failing to match probe data from a user known to be enrolled in the system
Negative matching is a hybrid form of 1:1 matching that authenticates a user for a right or privilege (such as voting) and also performs a 1:N search to ensure that the person has not previously enrolled under another identity.
