I've had a friend say he could tell it was me approaching, based on my gait (I hadn't seen him in several years and his eyesight was such that he couldn't see my facial features from that far away, but apparently my gait was still the same and he could identify that). There's been work to apply gait analysis in an automated fashion for use as a biometric identifier:

https://ieeexplore.ieee.org/document/1301521

https://onlinelibrary.wiley.com/doi/abs/10.1111/j.1556-4029....