Fisher-Price Go Diego Go Fossil Scanner Kids can go on their first dinosaur discovery missions with Diego Diego's Fossil finder will come with ten fossils that each have a fossil imprinted on one side them in invisible color change ink and a printed image of the dinosaur on the other When the fossils are scanned to be identified, a UV LED light causes the the ink to change color and is now magically visible on the fossil When the fossil is placed in the scanner with the image side up, the child will hear cool facts about the dinosaur There is also a quiz mode, where the child has to identify the dinosaur facts and answers the question by placing that fossil in the scanner