Layers of the onion, cheif. Every layer helps.

Carry no phone to places you don't want to be identified: problem 1 solved.
Put a pebble in your shoe to modify gait: problem 2 solved.
What are they voice printing, your whispers? Your shouts in a crowd? Your silence? Good luck. Problem 3 solved.

However, this mask is designed to defeat AI facial recognition at mass scale. Not to make you anonymous at all times eg protests and whatnot.