[_el1s7]

That won't work, a camera can also photograph another screen or a fake printed photo. And also cryptographic modules can be cracked.

[Sharlin]

Nothing is ever foolproof, but also, public-key crypto signatures are as secure as can be. Sure, you might be able to eventually extract a private key from camera hardware, but that's on the level of intelligence agencies, completely beyond the current situation of deepfakes being possible to make by anyone with an internet connection and no skills.

[nvme0n1p1]

> that's on the level of intelligence agencies

I think you meant to say: a single eastern European teenager who gets bored one weekend. These systems have been around for decades, and they've continually been hacked for decades too.

[petesergeant]

I would have thought most iPhones absolutely know if they're photographing a scene or a flat surface

[_el1s7]

Yes, iPhone has some clever depth technologies, but that doesn't mean it can't be tampered with.