Known as the Next Generation Identification system, since 2014 the FBI has amassed more than 50 million images scoured from facial recognition alone; and, as reported by the Electronic Frontier Foundation, the images have merged into the FBI’s legacy database of fingerprints and other identifiers to create a centralized hub of surveillance.
The FBI has admitted that the system contains non-criminal identification as well as criminal, including:
suspects and detainees,
fingerprints for job applicants
licenses
military or volunteer service
background checks
security clearances
naturalization
All told, it’s been estimated that half of all adult Americans appear in a biometric database.
Despite what is clearly a sweeping program of surveillance and a violation of numerous Amendments to the Constitution, the FBI has resisted all inquiries made by privacy organizations and even the House Committee on Oversight and Government Reform.
http://www.activistpost.com/2017/06/fbi-secrecy-privacy-org-urges-congress-address-biometric-database.html
https://epic.org/testimony/congress/EPIC-HAC-FBI-budget-June2017.pdf