I can see a future where a video from a hardware/software stack verified by Apple/Google is a required mechanism for authentication.

For example, you have to say or otherwise signal that you authorize the transaction to x person for y amount on z date.

I kind of do it with my tenants when I record a video walk through at the beginning and end of the lease to serve as proof of damages. I could use a checklist on paper and a signature, but I feel like a video is better evidence for me.