| 摘要 |
A book product having a sheet defining spaced-apart front and back covers and a spine portion therebetween having a laydown area that receives a signal responsive tag, and a book block of pages with an adhesive layer on a spine side that cooperatively attaches the pages together and attaches the book block to the spine portion concealing the signal responsive tag within a first thickness of the adhesive in the laydown area and the adhesive having a second thickness of adhesive in the non-laydown area of the spine, with the concealed signal responsive tag being responsive to a signal for inventory or security purposes.
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