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 acce

The two methods belong to different factor categories - possession and inherence - so this is genuinely two-factor authentication, not a single factor implemented twice.

Authentication factors fall into three categories: something you know, something you have, and something you are. An RFID badge represents 'something you have' (a physical object), while gait recognition represents 'something you are' (a physical/behavioral characteristic). Requiring both factors before granting access is the definition of multi-factor authentication, so the solution correctly implements two distinct factors.

Nothing in the scenario's design inherently produces a high false positive rate; this is a speculative claim not supported by the described implementation.

Gait analysis is an established biometric modality used in real-world physical access control and forensic identification, so the claim that biological motion cannot identify people is factually incorrect.