For anyone interested in barcoding there was an MCN session about 2 years
ago on this topic. An article was subsequently published in Spectra (Vol
20, #1 - Winter 1993 (send email to Michele Devine at [log in to unmask] for
info on how to obtain a copy)). At the end of the article there is a list
of people who have direct experience with barcoding at their institutions.
Also, there was a discussion on barcoding a year or so ago on museum-l,
check the archives.