IMAGEPERF/TLI
ImagePerf/TLI personalises each passport or ID-card in an unique way. A copy of the holder's photograph is irreversibly perforated into the card's body using laser technology. ImagePerf/TLI allows easy and reliable authentication of the original photograph and the card itself.
In addition to the repetition of the holder's photograph, a second image is incorporated into the document using a different perforation angle for some of the holes. This second image, for instance the country prefix, gradually becomes visible when the document is tilted to a certain observation angle. This feature is referred to a Tilted Laser Image (TLI). In addition to ImagePerf/TLI, ImagePerf is also available for travel and identification documents based on paper.
