18. A method for making electronic documents traceable within an electronic publication, said method comprising: receiving an electronic document having an electronic page description; receiving a message to associate with the electronic document; transforming the message into a binary format; and modifying the electronic page description of the electronic document including adding drawing instructions in the electronic page description, the drawing instructions being configured to code each bit of the binary format as a geometrical shape, wherein the geometrical shapes of all the bits of the binary format define a mark, the drawing instructions being configured to cause the geometrical shapes to be invisible when rendered on a screen display or on a printed media.
18. A method for making electronic documents traceable within an electronic publication, said method comprising: receiving an electronic document having an electronic page description; receiving a message to associate with the electronic document; transforming the message into a binary format; and modifying the electronic page description of the electronic document including adding drawing instructions in the electronic page description, the drawing instructions being configured to code each bit of the binary format as a geometrical shape, wherein the geometrical shapes of all the bits of the binary format define a mark, the drawing instructions being configured to cause the geometrical shapes to be invisible when rendered on a screen display or on a printed media. 20. The method of claim 18 , further comprising providing said mark in a font of a character.