Contributors ------------ Julian Looser, HITLabNZ (julian.looser@hitlabnz.org) Raphael Grasset, HITLabNZ (raphael.grasset@hitlabnz.org) Hartmut Seichter, HITLabNZ (hartmut.seichter@hitlabnz.org) Philip Lamb, ARToolworks Inc. (philip.lamb@artoolworks.com)