The scope of the RFID Data model for libraries working group is to set up a data model for the content of RFID tags to be used in library applications. It is envisaged that the data model shall be in 3 parts: A mandatory part, a structured extension part and a nonstructured extension part The data model shall also deal with the following issues: The RFID tag in security systems, the relation between a library data model and other application areas and the data model will appear as a data structure and its encoding format. The data model shall be applicable in Danish Libraries. At the same time the approach shall be so broad that international aspects are taken into consideration. The result of the work will be submitted to Dansk Standard S24/u4. When approved it will be published as a “Dansk Standard INF” publication and submitted to relevant parties in Denmark, in the ISO system and elsewhere.