Nextgov: "The FBI released on [January 13, 2009] a detailed study of the advancement of different kinds of biometrics -- from fingerprints to ear scans -- to lay out how the bureau might pursue the identification of individuals in the future."

• State of the Art Biometrics Excellence Roadmap - Technology Assessment: Volume 1 (of 3) Fingerprint, Palm print, Vascular, Standards, October 2008; v1.2.
  
• Technology Assessment for the State of the Art Biometrics Excellence Roadmap - Volume 2 (of 3) Face, Iris, Ear, Voice, and Handwriter Recognition, October 2008; v1.2
  
• State of the Art Biometrics Excellence Roadmap, Certified Products List (CPL) Expansion: The Way Ahead, October 2008, v. 1.2, October 2008