What's the general opinion on combating deepfakes using hardware-based signatures?

[A very recent article](https://ethz.ch/en/news-and-events/eth-news/news/2026/03/chips-designed-to-help-identify-deepfakes.html) named "In-sensor cryptographic signature generation to link a physical process and an immutable digital entity" did a proof-of-concept on this idea.

I know some of the drawbacks, like key compromise risk, and privacy issues when the secret key is different for every chip. But are these issues big enough to deter hardware-based signatures to be adopted at a higher scale?

I think the advantage of being able to discern real photos from computer generate images outweighs the risk of key compromise.