SECURED DOCUMENT INCLUDING A TAMPER-PROOF INFORMATION TYPOGRAPHY

摘要

The invention relates to a secured document (1) comprising at least one writing layer including identity information (10, 13) written in or on said layer, characterised in that the written identity information is encoded (11, 12) according to a type of code such that the written identity information includes a first series of first characters (C1i) and/or first images having as a redundancy a second series of so-called tamper-proof second characters and/or second images (C2j), wherein a second character and/or a second image cannot be converted into another second character and/or second image without deleting at least a portion of the identity writings.