http://sls.iykpqm7jiradoeezzkhj7c4b33g4hbgfwelht2evxxeicbpjy44c7ead.onion/technologies/biometric-surveillance
By using this technology, a law enforcement official could use tattoos as a proxy to create lists of people based on their religion, nationality, political ideologies, or common interests. Source: National Institute of Standards and Technology A slide from a NIST presentation on Tattoo Recognition Technology However, assumptions made about tattoos can be wrong .