DOCUMENT COMPRISING A BUILT-IN DISPLAY DEVICE

摘要

The invention relates to a document comprising an integrated display device (102), an electronic memory (126) for storing first (106) and second (107) data, and control means (122, 128, 131) for controlling the display device for reproducing the first and second data. The control means is designed in such a way that the duration of the reproduction of the second data is below the perception threshold for a visual perception of the reproduction of the second data.