Infrared technology can help art collectors find hidden details in paintings, such as signatures or sketches beneath layers of paint. Specifically, an infrared reflectometer can detect these hidden features without damaging the artwork. One example is an ongoing search for Leonardo da Vinci's lost fresco "The Battle of Anghiari", which may be hidden under another painter's work. Similarly, infrared examination has revealed hidden signatures, drawings, and inscriptions in other artworks.