Just take a picture on a device which can't connect to the internet that's secure from virus.
not viable for long term storage
Why would it not be?
Just take a picture on a device which can't connect to the internet that's secure from virus.
not viable for long term storage
Why? the only way someone can access it is locally.
How long do you expect a hard drive to last? 50 years at best, likely much less.
Pen and (acid free) paper lasts hundreds if stored properly.