Temporary natural storage
In a nutshell, according to optics.org: Japanese researchers have figured out a way to etch data onto fingernails.
Thiis conjures all sorts of interesting ideas, which for me are revolving about Hollywood “action thriller” screenplays. You wake up in a dark room…you have no idea where you are….but all of a sudden, strange things start to happen…people are following you, trying to catch you. Your only choice is to run. But why? Who are these people? Sooner or later, you meet up with the sexy scientist girl, and she spots something on your fingernail…”That’s odd,” she says, “I wonder what it is.” Eventually you find out it’s the super secret code that everyone needs to execute their nefarious plans, be they governments, companies, or cartels. And that’s when the story turns, and you can lure them all…try to sell to the highest bidder? Threaten to make public the information etched into your fingernail? Or hold it for ransom, declaring that you will burn it off unless they give you exactly what you want. Then, of course, you can either burn it off anyway (but of yourse your geeky vixen love interest was smart enough to duplicate the data without them knowing), or you can give away faulty information,and still get your reward.
Either way, there’s room for a sequel.
Well, as long as you do all this before six months elapses, and you find that your fingernail has grown…
Imagination aside, you have to admit this is a cool hack.