The EM Book Tail tags is a Dialoc ID security tag that prevents unauthorized removal of books from librairies.  The tag triggers the EM detection panel systems located at the book control points in the libraries.

The tags can secure books, valuable items as laptops, cell tablets and other storage media in the library.  The PH-neutral tail tag will not yellow the book or damage it chemically.  They are available in lengths of 16.5 cm with double side adhesive, placed deep inside the book in the gutter, or single side adhesive, placed on the spine of the book.