USB multi touch screen 1. True Multi-Touch, No Ghost Point: 2. Support 6/10/16/32/40 Precise Touch Points Simultaneously USB multi touch screenMulti-Touch Overlay• True Multi-Touch, No Ghost Point: Support 6/10/16/32/40 Precise Touch Points Simultaneously• Single USB Connection• Extremely Low-cost• Accurate and Reliable, Low Maintenance Requirement• Landscape or Portrait Orientation• Touch Method ...