[estebank]

I think anything short of fully obscuring your face (a-la ICE-agent/stormtrooper) will be merely a mitigation and not 100% successful. I recall articles talking about face recognition being used "successfully" on people wearing surgical masks in China. In the US they ask you to remove face masks in places where face recognition is used (at the border, TSA checkpoints), but would be unsurprised if that isn't strictly needed in most cases (but asking people to remove it preemptively ends up being faster for throughput).

[quantified]

Probably room to add little cheek pads or other shape-shifters under the mask.

[verdverm]

You have to change how you walk and sounds as well