... or Pointer (with diameter ≥ 5mm)• Object Recognition (Palm, Fist, etc)• Calibration: One-time Calibration, Friendly Interface• Compatible with Windows 7/ ... thickness(Without Glass)Luminous Transmission 95-100% typical with clear glassTouch Technology InfraredTouch Activation Force No pressure ... , EN55024, CISPR 22, CISPR24Interface USB2.0 compatible with USB 1.1Operating Systems Windows 7/8, Vista, ...