Identification keys on mobile devices: the Dryades experience

The paper describes the experience of project Dryades, coordinated by the University of Trieste, in developing interactive identification keys in the form of applications for mobile devices (iPhone / iPad / iPodtouch). All of our keys were previously generated from a database of morpho-anatomical characters using software FRIDA. The applications for mobile devices, which were tested Europewide during the project KeyToNature, have proved to be useful in education, in the promotion of nature-aware tourism, and in projects of citizen science. The first-generation apps were stand-alone packages which consisted into a sequence of stand-alone HTML pages, while those of the second generation do incorporate the digital key as a true database into the mobile device. All of the hitherto published applications are basically in the form of illustrated dichotomous keys. Future developments will include also a multi-entry query interface, and will be extended to devices which use the Android system.