Not sure why you think the Nazis would care about the courtesy of making it invisible.

UV inks have been around for a while, they don't last very long sadly.

I was implying they'd use it for themselves, to tell who was one of their kind. But, yeah, sure. That too. 😅

Yeah because that's what the Nazis need, the ability to put invisible QR codes on our fuckin foreheads with ink that probably cause cancer

Sorry, but sweeps arm at timeline this is not gonna go well at all —not even if they try to spin as an "alt" lifestyle invention... and not the us v Them escalation it'll spark. 🥲

I can already make a tattoo that is visible on demand that runs no more risks than a standard tat: Putting it somewhere that's normally covered by clothing.

That’s not how crescent moons work. That’s a C.

For a moment I thought it's nyanko-sensei