A secured holograms | Holostik
Introduction A hologram is a type of structure that utilizes light diffraction for making an image appear three dimensional. Hungarian-British physicist Dennis Gabor invented this technique. In 1971, he was awarded a Nobel prize for the invention of this technique. The hologram was an unexpected discovery made during research which involved an advancement in an electron microscope. This discovery took place at the British Thomson-Houston (BTH) company in Rugby, England. Applications for Security - Hologram stickers have various security purposes. Security holograms are hologram labels that are printed. Hologram stickers are difficult to forge. It is so because they are a replication of a master hologram. The master holograms are expensive, made with technologically advanced tools. Hologram stickers are commonly found in banknotes all around the world, especially in the notes of high denominations. The stickers are also found on passports, credit, and other bank cards, an