Steve, a scientist who works in a governmental security agency, developed a technological solution to identify people based on walking patterns and implemented this approach to a physical control access. A camera captures people walking and identifies the individuals using Steve's approach. After that, people must approximate their RFID badges. Both the identifications are required to open the door. In this case, we can say:

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B. The solution implements the two authentication factors: physical object and physical characteristic The solution uses two distinct authentication factors: walking patterns (gait analysis) which falls under 'something you are' (a physical characteristic/biometric), and RFID badges which fall under 'something you have' (a physical object). Requiring both constitutes multi-factor authentication.

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A. Although the approach has two phases, it actually implements just one authentication factor The approach clearly uses two distinct authentication factors ('something you are' and 'something you have'), thus implementing two factors, not just one.

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C. The solution will have a high level of false positives Multi-factor authentication inherently reduces false positives and increases security, rather than guaranteeing a high level of them.

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D. Biological motion cannot be used to identify people Biological motion (gait) is a recognized biometric characteristic that can indeed be used to identify people, making this statement incorrect.

Steve, a scientist who works in a governmental security agency, developed a technological solution to identify people based on walking patterns and implemented this approach to a physical control…

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