They could by implementing the photo hashing on uploaded photos. There probably is a debate to be had on the merits of your phone being used for purposes like t

They could by implementing the photo hashing on uploaded photos. There probably is a debate to be had on the merits of your phone being used for purposes like this but I think the implementation details pale in comparison to the problems with the mass surveillance tool being created here. It’s clear that the correct solution is to blindly encrypt photos on the user’s phone before uploading them to iCloud. Full stop.