... , rotate, zoom in/out 2.Withstands severe environments 3.Stable, no-drift etc. ETWOTOUCH 4 points 32 inch IR multitouch screen ... multitouch protocol.Basic parameters:--Light transmittance: 95%-100%--Touch pressure:No need pressure,touch the surface of screen is ok.--Resolution ... ,Mac OS,Linux 4 points 32 inch IR multitouch screen No drift under the change of time and environment Etwotouch