System and Method of Information Management for Use with Musical and Theatrical Entertainment

摘要

An information system for use in information management for musical and theatrical entertainment comprising an electronically-accessible data record. The information system includes a performance element; a substrate having thereon one or more printed codes practically imperceptible to a human being; and a device having an optical reader capable of reading a selected one of the one or more printed codes on the substrate, non-volatile memory and a controller, the device further having means for providing humanly perceptible feedback, the non-volatile memory storing the performance element.