Ever since they introduced the facial recognition software I have opted out. I always approach the station at an angle if possible or with my passport between the camera and my face if not. Then when thy ask me to step in front of the camera a simple "No, thank you" has always worked. Polite yet firm and they hand me back my passport and away I go. It's pretty much always faster.

Every so often you get a dickhead that makes a show of it taking longer to verifying it by their own eyeballs.

That being said, if you a flying internationally anymore, your picture at least will be taken when you enter.