This type of forgery will sometimes allow an examiner to identify who made the forgery based on the handwriting habits that are present in the forged signature. The teams investigate and assist federal and local law enforcement agencies with investigating criminal activity related to fraud and identity theft.Dr. Fenoff specializes in forgery and document fraud, food fraud and security, and the use of science in the courts. They investigate general crimes on property and persons, sexual abuse and harassment, and economic crimes such as contract fraud.