I've had an idea for wide format, high density, optically read, punched mylar (or other similar plastic) film - so something like a 5 foot roll of mylar punched

I've had an idea for wide format, high density, optically read, punched mylar (or other similar plastic) film - so something like a 5 foot roll of mylar punched at 12-16 dpi. Leading to storage in the 1-2k bytes per linear inch. Mylar if stored properly could last a very very long time.