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Chris Hu said:

Well Holographic Discs and Cards where supposed to be the next great thing in storage but neither ever made it to the market since overall the technology is too expensive since the cost of the readers is way too high.

https://en.wikipedia.org/wiki/Holographic_Versatile_Card

https://en.wikipedia.org/wiki/Holographic_Versatile_Disc

Yeah, they propose this for long term archival storage. No mention anywhere that it will ever be consumer level tech. The new microfiche. It would be cool though, uncompressed movies on tiny discs.