That'll only delay the inevitable. Hair. Height. Walking patterns. Stride Length. Each added Criteria helps improve the odds. Oh this masked person waked

That'll only delay the inevitable. Hair. Height. Walking patterns. Stride Length. Each added Criteria helps improve the odds. Oh this masked person waked out of building but they know of 28 people identified in building. So even without identifing your face they only need to build Confidence among a very small subset. Even if you go from building to city or country. They could likely narrow it to high confidence especially if they can actively ID the locations of all others with similar characteristics as you.