Machine Readable Travel Documents - ICAO
Machine Readable Travel Documents - ICAO
Machine Readable Travel Documents - ICAO
You also want an ePaper? Increase the reach of your titles
YUMPU automatically turns print PDFs into web optimized ePapers that Google loves.
III-6 <strong>Machine</strong> <strong>Readable</strong> <strong>Travel</strong> <strong>Documents</strong><br />
Additional features<br />
— If the core substance is paper it is desirable that it contains a watermark comprising two or more<br />
grey levels, preferably in register with printed design.<br />
— invisible fluorescent fibres and/or planchettes in core or laminate;<br />
— visible (fluorescent) fibres and/or planchettes 1 ;<br />
— security thread included in the card construction. The thread may incorporate special effects<br />
such as thermochromic, photochromic, optically variable or magnetic properties 1 ;<br />
— tactile feature on card outer surface.<br />
Note. — Where the core substrate used for the MRtd is formed entirely of plastic, it is usually not<br />
possible to incorporate the security components normally available in a paper substrate. In such cases<br />
additional security properties shall be included, including additional security printed features, enhanced<br />
personalization techniques and/or the use of optically variable features.<br />
5.2 Security printing<br />
5.2.1 Background and text printing<br />
Basic features<br />
Additional features<br />
— two-colour guilloche security background design pattern 2 ;<br />
— rainbow printing;<br />
— anti-scan pattern;<br />
— microprinted text.<br />
— duplex security pattern;<br />
— relief (3-D) design feature;<br />
— deliberate error (e.g. spelling) incorporated within microprint.<br />
1. The use of these features must not interfere with machine readability of the document in the B-900 band of the spectrum or with the<br />
legibility of the portrait, signature or other biographical data in the visual zone.<br />
2. Where the guilloche pattern has been computer-generated, the image reproduced on the document must be such that no evidence<br />
of a pixel structure shall be detectable. Guilloches may be displayed as positive images, where the image lines appear printed with<br />
white spaces between them, or as negative images, where the image lines appear in white, with the spaces between them printed.<br />
A two-colour guilloche is a design that incorporates guilloche patterns created by superimposing two elements of the guilloche,<br />
reproduced in contrasting colours.