Tangible Music Interfaces Using Passive Magnetic Tags” by Joseph A. Paradiso, Kai-yuh Hsiao and Ari Benbasat, 2001. The value of RFID tagged toy figures were mapped to certain parameters of a music software. Different locations and distances of the so called Musical Trinkets produced different sounds. Therefore this is a really good realization of simutaneously read RFID tags, which as well incorporate the distance of each tag, which is not really trivial thing to do.