A document which includes a cover, one or more internal pages, a
radiofrequency microcontroller, an antenna electrically connected to the
radiofrequency microcontroller, an electromagnetic shield capable of
partially disrupting wireless communication with the radiofrequency
microcontroller when the document is closed, and not disrupting the
wireless communication when the document is opened is described. The
electromagnetic shield included in the document is implemented using
metal, conductive plastic, conductive ink or magnetic ink.