I can imagine this becoming pretty standard in the near term, particularly in new smart phones, and also done for video too. As ever, yes it can be faked (by t

I can imagine this becoming pretty standard in the near term, particularly in new smart phones, and also done for video too. As ever, yes it can be faked (by taking A picture of a screen for example) but it ups the cost of faking a massive amount from where it is currently