The Amparo Museum is the pioneering institution worldwide in the use of interactive systems designed to serve the public. The system was installed as a support tool for the Museum's Collection of Prehispanic Art, of which 175 representative works were chosen (from the 4530 objects in the collection), to be included on the original (CDi), Compact Disc Interactive. Thirty-two units were placed throughout the seven galleries of the prehispanic exhibition areas, with the exception of the special room where the most spectacular works are displayed. Some of the objects from this room were included in the disc, to illustrate a particular topic, but fundamentally to facilitate knowledge by its users.