Answer :
Based on the actions that Cassidy took, the the hospital uses Biometrics to protect the medical records.
Biometrics is a recognition system that has to do with the analysis of the physical features of a person as a way of establishing their identity.
In this question Cassidy types a password and then stares into a camera. This is a face recognition device. Anyone who is not registered as a staff cannot get access because they would not be recognized.
Therefore we can conclude that the biometrics system is used to protect the records.
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