Articles e.g. library book, presence detecting system for library shelf, has scanning unit equipped in library shelf for detecting radio-frequency identification tags of library books, and write unit arranged at label

摘要

The system has a scanning unit (10A) equipped in a library shelf (4) for detecting radio-frequency identification tags (6) of library books (8) contained in the library shelf. A write unit (10b) is arranged at a label that is detected by the scanning unit to change a selection code, where the write unit is connected to the library shelf.