Nasir Memon, chair of the New York University Tandon School of Engineering explained to Gizmodo earlier this year that Touch ID actually takes multiple tiny photos of a person's fingerprints. (gizmodo.com)
Small Heart Locket Necklace, Personalized Tiny Photo Heart Locket, Small Heart Vintage Locket, Flower Girl Jewelry, Pink Heart Locket (etsy.com)
Chuck Close uses tiny photos to make wall - sized pictures of people's heads. (pressherald.com)