Machine Readable Travel Documents - ICAO

(xvi) Machine Readable Travel Documents
Term Definition
Passport Card A td1-sized card which may be issued in place of, or in addition to, a passport book
and which one or more receiving States agree to accept as a passport.
Penetrating
numbering ink
Ink containing a coloured component, which penetrates deep into a substrate.
Personalization A process by which biographical data of a certain person are applied to the document.
Phosphorescent ink Ink containing a material, which glows when exposed to light, the reactive glow
remaining visible and then decaying after the light source is removed.
Photochromic ink An ink that undergoes a reversible colour change when exposed to UV light.
Photo-substitution A type of forgery in which the portrait in a document is substituted for a different one
after the document has been issued.
Physical security The range of security measures applied within the production environment to prevent
theft and unauthorized access to the process.
Planchettes Small visible/invisible and/or fluorescent platelets incorporated into a document
material at the time of its manufacture.
Probe The biometric template of the enrolee whose identity is sought to be established.
Rainbow printing
(Iris or split fountain
printing)
A technique whereby two or more colours of ink are printed simultaneously by the
same unit on a press to create a controlled merging of the colours similar to the effect
seen in a rainbow.
Reactive inks Inks that contain chemical sensitizers to guard against tampering.
Receiving State The country to which the MRTD holder is applying for entry.
Relief (3-D) design
(Medallion)
A security background design incorporating an image generated in such a way as to
create the illusion that it is embossed or debossed on the substrate surface.
Secondary image A repeat image of the holder's portrait reproduced elsewhere in the document by
whatever means.
Security thread A thin strip of plastic or other material embedded or partially embedded in the structure
of the document.
See-through register
(front-to-back)
See front-to-back register.
Shadow Image Used synonym to Ghost Image: A second representation of the holder’s portrait on the
document, reduced in contrast and/or saturation and/or size.
Size 1 machine
readable official
travel document (td1)
Size 2 machine
readable official
travel document (td2)
A card with nominal dimensions guided by those specified for the ID-1 type card
(ISO/IEC 7810) (excluding thickness).
A card or label conforming with the dimensions defined for the ID-2 type card (ISO/IEC
7810) (excluding thickness).