I’m working on a project what requires around 1 to 2kb of data to be stored for ~80 years.
My thinking was a QR code (ECC H) etched into aluminium. Benefits being no bit rot & the assumption being cameras should still be commonplace in 80 years (And if QR isn’t a commonly used format anymore, surely an AI agent could easily write an app for the user).
Does anyone have any better suggestions or think I’ve missed anything.
I actually think there’s two facets at play here. There’s the first dimension, the durability of the medium itself against the environment, which is what you’re asking about. The second dimension is redundancy. It’s all well and good if you invest in aluminum but something heavy gets dropped on your plate and the singular copy is damaged beyond recovery. Worth considering that if this information is important enough to etch in metal, you should make several copies across a few different storage mediums in a handful of physical locations. A safe deposit box may not be a bad idea, for example.
He’s also assuming whatever format he picks will be readable without including a reader or instructions in the box.
There’s a possible option to engrave instructions on the back, but I get what you mean