Johnson v. State

Martaz Johnson v. State of Maryland, No. 6, September Term 2017. Opinion by McDonald, J. Evidence – GPS data – Expert Witnesses. The State introduced data derived from a GPS device carried by the defendant as part of his employment and kept by his employer in the ordinary course of business. That data indicated an itinerary consistent with the testimony of the victim of the offense. The data, which would be understandable to a lay juror based on common experience, was admissible in evidence without the need for foundation testimony by an expert concerning the operation of, and science…