What if the real person draws something on his face?
Does the deepfake algorithm removes it from the resulting image?
Can you ask the caller to draw a line on his face with a pen as a test?
> Can you ask the caller to draw a line on his face with a pen as a test?
I think if the caller did this without objection that would be a bigger indication that it is a deep fake than the alternative. What real person is going to comply with this?