The "Contact" Way (Score 1)

IMHO the best 'viable' option is the 'card-computer' combo. The other logical option is to store it in a long-term non-magnetic storage support. Kinda of payrus, metal, stone. You will have to store: - The data in a visible caracters. - The mathematical algorithm to read the format. - One color coding schema. - The mathematical algorithm to decode the compressed image format.