Ask HN: Are there examples of 3D printing data onto physical surfaces?
Summary
Hacker News asks for examples of encoding data onto physical surfaces using 3D printing. The discussion explores feasibility, data density, and potential archival or encryption use cases, with replies suggesting punch cards, engraving, and embedding data in resin as alternatives. The thread weighs read/write methods, durability, and reading equipment, highlighting the novelty and limitations of filament-based data storage.