alt Hacker NewsActually, there are many ways. For example they change colors on your screen and check in real time how it reflects on your face, eyes, etc. Very hard for a model to be trained to respond this quickly to what's on the screen.
They also have you move your head in multiple directions.
You could always generate a random face model with real time rendering with enough details to trick any AI detector (or even human) and then you can do real time animation to orders or screen light tricks. You could also simply use some face filter on your face and these ones are really convincing these days (like on Snapchat and such).