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:

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:
A . Although the approach has two phases, it actually implements just one authentication factor
B . The solution implements the two authentication factors: physical object and physical characteristic
C . The solution will have a high level of false positives
D . Biological motion cannot be used to identify people

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Answer: B