The Bar Code Tattoo

BD says that if he ever gets a tattoo that it'll be a bar code on the back of his neck.  I asked him what it would say if someone scanned it, and he said it'd be cool if it represented his name.  I told him that that would definitely come in handy if he was killed during a robbery.  Then, the CSI team could just scan his neck to identify him without having to wait on dental records.