DS457-HD The DS457-HD features the same tiny footprint andstunning scanning performance of the DS457 Series. The HD model is optimized toaccommodate the very tiny and dense 2D bar codes frequently found inmanufacturing. Corded 1D, 2D, PDF, paper or electronic displays, tiny/dense 2D Omnidirectional 30 in. (76 cm) drops to Concrete