This new technology will completely prevent paper counterfeiting

Swiss scientists hope the technology will soon be widely used in security areas, such as increasing the level of protection of identity elements against counterfeiting of passports and other documents.

Probably one of us is familiar with cards, rulers or magnets with holograms that vary depending on the angle of view. From this idea, researchers at the University of Technology in Lausanne, Switzerland, have developed a technology that allows them to print images that change their content when viewed under different angles with much higher quality. a lot of.

How did they do that?

Scientists use sheet metal as a printing substrate, where the printer uses tiny dots along the line and creates two combined images, perpendicular to each other. The final result will depend on the ratio of colors such as yellow, magenta, cyan, black and even the angle of view.

Light passing through the multicolored ink will create different "shadows" on the surface of the metal. If the lines are perpendicular to the light, they produce a large shade, and if there is no shadow, the color is unclear.

When the metal plates are rotated 90 degrees on the same plane, the ink dot line that was previously perpendicular to the light becomes parallel to it and vice versa. From there the image will also change.

Swiss scientists now say that the technology is only applicable to metal plates and inkjet printers. They hope it will soon be widely used in security areas such as increasing the protection level of anti-counterfeiting elements of passports and other documents, because it will be extremely difficult to imitate or fake this new printing technology.