So I'm watching NCIS Los Angeles and you know the drill in every detective show since, well forever. Suspect has a tattoo and in the case LL Cool J says something to the effect I know that artist work as they try to ID a suspect. Is that even possible today? With everybody and their grandmothers sporting multiple overlapping ink and a tattoo salon on every other street corner can any possible say I know X's style. And poor Jane Doe was able to afford and commission the premium tattoo artist to do her exclusive piece of art work.