In coming years, the bureau wants to compare palm prints, scars and tattoos, iris eye patterns, and facial shapes.

CNN: FBI wants palm prints, eye scans, tattoo mapping

Modern face tattoos (even cool ones such as Mike Tyson's eye tribal) definitely have a long way to go before they reach the same level of social acceptance as nose piercings.

CNN: Apparently This Matters: Face tattoos

He has several tattoos, including a small heart -shaped one below his right eye and a large one of an owl that covers his neck and part of his chest.

CNN: Woman sought in Las Vegas Strip shooting