Insert
An additional element of a book block in the form of a separate sheet with numbered or unnumbered pages attached to the main block. Material and method of fixing an insert may differ from typical pages of a book block. One book block can contain more than one insert. The insert can be printed separately.
Types of inserts in travel documents:
- multilayer integrated card with holder’s data;
- multilayer polycarbonate sheet with an RFID chip;
- paper sheet with or without lamination;
- transparent polycarbonate sheet with a verification filter for visualizing a latent scrambled image.