The Webscan Rover 2D and Linear Bar Code Verifier is GS1 certificated for both Linear and 2D bar codes and is fully portable. No special training or experience is required–using this verifier is as simple as placing the bar code verifier over the bar code and pushing a button. NOTE: The field of view for this model is 3.00″ x 2.24″ (76.5mm x 57mm) with a minimum X dimension of 8 mil.