So it's 2 to 3 percent of original estimate? That means it'll last anywhere from 280 to 420 million years. Dead on arrival tech.

How can you be so sure they haven't already done durability testing??

The ones with metal pigment are still waiting to fail, the ones that died used a cheap organic dye, coz profit. This is Silica (i.e. quartz, a long lived rock) with variances in polarization and intensity,( hence 5D when combined with a 3D Crystal))

OK generic marketing crap and will you have their special reader in a century, but it's a solid way to project knowledge into the far future (gotta wonder if we need to re-examine some quartz crystals with this in mind ;}