Lenticular printing is a technology that creates images with an illusion of depth or the ability to change as the image is viewed from different angles. This is achieved by using a special lens called a lenticule, which consists of many small, cylindrical lenses. These lenses are placed over a printed image, allowing multiple images to be viewed depending on the angle of observation. The process involves printing several images and aligning them with the lenticular lens. This technique is commonly used for postcards, advertisements, and collectible items, providing a dynamic visual experience that captures attention and engages viewers.