161 points

The year is 2245. The heirs finally locate a working, antique reader that can handle the ancient USB key, hoping to find great-great-grandpa’s crypto-wallet or the pin-code to a long-lost Maltese bank account.

Instead, they find a 4-bit, VGA-quality scan of Miss October.

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113 points
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An actual book stores more data than that and for longer. At that point, why not just etch the data onto a metal plate or something? 8K is only a few pages of text at 12pt. It could easily fit onto two sides of a small-ish metal plate, etched in 8pt or so, and it would last, potentially, for millennia.

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44 points

I think the idea is to improve upon this tech so the capacity would become larger.

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36 points

It’s FRAM, which has been around for ages. The problem is its prohibitive cost— hence the 8k.

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9 points

This can be rewritten many, many, many times.

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45 points
*

What’s the practical benefit of that? If the point is long-term storage, rewriting isn’t a priority (or possibly even a need). And this isn’t designed for capacity.

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12 points

It’s so I can exchange fart jokes with my great great great great grandson via a magic USB port a la The Notebook, assuming that’s how it works, idk, never actually seen the movie.

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1 point
*

I usually update my backups with new TOTP or other cryptographic keys every few months. Sometimes every few days (when I generate new keys).

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4 points

Why even invent the car when horse so much faster?

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2 points

You wouldn’t use a car to race in the Kentucky Derby

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4 points

Maybe you wouldn’t

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2 points

I absolutely would

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0 points

idk, its much more resistant to floods.

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10 points

Than an etched metal plate?

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67 points
*
  1. Print out 8KB on high quality paper.
  2. Store in good environment…
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7 points

How do I read that data back

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61 points

With your eyes

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28 points

But 100 years we’ll all be mole people without eyes!

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11 points

My brain doesn’t have the decryption key. I’m no man in the middle.

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7 points

just print something like a QR code in absurd resolution and read it in a document scanner, a single sheet of A4 should be able to fit quite a lot of data.

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1 point

I was curious, so I looked it up and it seems that around 3KB is the max for a single 177x177 code (though I imagine this is a “soft” limit?). With 600DPI being common for laser printers, a DPI-limited 3KB would be well under 1cm x 1cm. My hunch is that this wouldn’t be super reliable (DPI limit not necessarily the resolution of the printer?), but I’d be curious to see what the usable QR density actually is. But yeah…a few QR codes should do the trick!

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2 points

How do I get a good environment?

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1 point

What was the name of the metal boxes you put as the cornerstone of a house again?

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67 points

So your 8KB of data will last forever, but what about the firmware required to access it running on flash?

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54 points

In 200 years, AI will hack it for you, but you’ll need a dozen antique dongles to get from USB-Z to A.

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10 points

it does say it has a built-in serial console and raspberry pi

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21 points

And the firmware inside that rp2040 is stored on plain old flash memory. So while the data may still be on the memory chip, the controller chip dies at just the same pace than every other usb drive - and then you can’t access it.

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44 points

As the old saying goes: What could a person need more than 8KB for?

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1 point

32KB*

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