To facilitate the identification of specimens, biodiversity informatics
has developed numerous new computer-aided tools which compete with the
old, printed single access keys. Free access keys are accessible for many
different taxonomic groups, but key-generating software are also helpful to
construct single access keys. This paper presents a midfield solution to create
customized decision trees (single access keys) through an interactive webbased
interface. This solution offers an online service to create keys according
to the parameters and context chosen by the final users themselves. It is also
useful for the administrator of this online system, because of low-maintenance
needs, limited to configuration files when new knowledge bases are added on
the server side. Presently, the software is available with a French interface at
the following URL: http://baron.snv.jussieu.fr/cgi-bin/david/MyKey.cgi.
