Expert Witness.
Specialist in a subject who may present his or her expert opinion such as a forensic accountant or C.P.A. auditor in the case of evidence utilizing AIS data. If the expert is challenged by the defendant’s council, evidence of their expertise, training, or special knowledge can be an exception to the rule against providing an opinion as testimony. The prosecution must prove any experts’ qualifications if challenged and the trial judge has the discretion to rule if the forensic accountant is qualified as an expert, or is limited on the subjects that she or he would be an expert (http://www.legalexplanations.com/definitions/expert- witness.htm).