People get tattoos done for all sorts of reasons, I suppose. At the very least, it’s a form of adornment or display.
Today’s invention allows people, who want to make their display public, to advertise the fact that they have a tattoo, even when they are rugged up for the Winter.
Every time a tattoo is performed on someone’s skin, a digital photograph would be taken and passed to an automated embroidery machine. This would create a representation of the tattoo in question on eg a shirt or coat -ideally directly over the location of the tattoo itself (and in the correct colours).
People might choose to have only a simplified version embroidered, in order not to steal the thunder of the underlying pattern, when revealed. (Actually, I wonder why automated tattooing itself is not widely available?)