John A.J.M. Riemen is lead specialist to the Dutch Police and is the manager and custodian of the national criminal ABIS. He oversees the Center for Biometrics as part of the National Forensic Service Centre of the national Police and nationally responsible for the Fingerprint and Face identifications. He serves as the expert witness in court for these fields and is the strategic advisor to the office of the national Police Commissioner.

He has experience in the use of forensic fingerprint technologies, face recognition, disaster victim identification, identity management, identity fraud and process design in the field of biometrics. John is for more than 37 years active in law enforcement and for more than 21 years in forensic science.

He currently serves as a member of the IDEMIA Public Security Executive Users Board as international users representative.

He is the chosen vice-chair of the Ridgeology sub-working group of the Interpol Disaster Victim Identification Working group.

He is guest lecturer at the University of Amsterdam and the national Police Academy.