...ID issuance agencies can compare new ID photos to existing images and prevent ID fraud or detect clerical errors. In addition, agencies can perform database de-duplication (1:n or n:n) to compare, clean and maintain ID databases with facial images. FaceVACS-DBScan LE helps law enforcement staff to increase the speed and accuracy of criminal investigations, allowing them to act upon match results in the critical time period after a crime has been committed.