You would be surprised. Facial recognition has progressed considerably.
Here is a series of recommendations from AWS:
https://docs.aws.amazon.com/rekognition/latest/dg/recommendations-facial-input-images.html
Note that at a higher resolution (1080p), it is possible to recognize an image as small as 50 x 50 pixels under the right conditions.
It is already on the verge of replacing passwords, as anybody who enables face recognition on their iPhones can attest.
It's almost too scary to contemplate but we are rapidly approaching a time where our every movement can be tracked with low cost technology.
Picture this scenario: You step into a cab. Or an Uber. The driver is alerted, through their dashcam, that you have a warrant for your arrest. So instead of getting to your destination, you are instead driven to the nearest police station and handed over.