I’ve been around Germany....off and on...for over twenty years. I’ve seen their national ID card (the old version and new one with the chip/bio-metric picture). The card works. I admit, the cost factor would have to be modified or improved.
The forearm/tattoo story is one of the most naive episodes that come up from the Reagan era and we are lucky that the same characters weren’t making up reasons why we shouldn’t have automatic transmissions.
I was in Germany too. What works for a country the size of Oregon doesn’t work here. It a math thing.
I saw how bad their healthcare was too, but I was there in the early nineties.