I will disagree. Being alive or dead should not impact what others can do as far as your privacy goes.
I would also extend this to any technology available in the future. Facial recognition is interesting, but let’s think about more advanced biological things that could be available in 50-100 years.
It could be argued rights are something a person has. Once you die, you are no longer a person. Dead people don't have a right to vote.
I think a much stronger argument is to be made that your surviving family/friends have a right to privacy that somehow includes aspects of deceased relatives lives staying secret. But that makes it a right for the living, not the dead.
I’m not suggesting the dead should vote. I’m saying the living consider the consequences of their vote even if they don’t think they will live to see it.
I would also extend this to any technology available in the future. Facial recognition is interesting, but let’s think about more advanced biological things that could be available in 50-100 years.