Terrible idea: analog data floppy disk.
Each period on the disk records a byte.
Maximum magnetic strength equals 255, minimum magnetic strength equals 0.
If your noise floor is too high, smaller values cannot be recorded
@foone I mean it's terrible if you store data directly, but if you can store a calibration burst and a Reed-Solomon ECC alongside, it might just work...
... though 256 levels might be a bit too much, even MLC flash is limited to four levels so far.
