"preserving, within a special film, whose duration is guaranteed for at least 500 years, any type of digital data in simple binary form (0101)"

https://translate.google.it/translate?hl=it&sl=it&tl=en&u=http%3A%2F%2Fwww.osservatoreromano.va%2Fit%2Fnews%2Fbiblioteche-al-freddo%23

WUT

"high-resolution photosensitive film as a digital storage medium. Data is written to film as large QR-codes, each containing 8.8 million pixels. This allows any kind of data to be preserved online, on a storage medium with a documented lifetime of 500 years."

https://www.piql.com/content/uploads/Alternative-Storage-Technologies-Piql-Whitepaper-1.pdf