From what I understand, this technology will be able to detect if an image has been modified. How will that stop people from training AIs on a persons face and then generate an entirely new image? This is possible right now and I’m sure it will be even easier and more realistic in just a few years

It's a noble effort, but it feels like they're trying to put the toothpaste back in the tube.

People can already do this with photoshop. Heck, fake nude celebs have been a thing since the 1990s.