Comment EPROM chip? (Score 1) 633
I guess that people can read datasheets.
I guess people still remember the binary system.
Then, keep it simple: Use a EPROM-chip with paralell address, paralell data. Print the datasheet for the chip on paper and a description of the file system. (Design one simple by yourself, or use tar and print it's specification).
Worst case: They have to get someone to design the hardware themselfs... I could build a reader for that here with a small microcontroller in 30 minutes. It's really simple actually...
But use it just as an option if some other more modern techonology fails, like USB flashdrive... Redundancy...