Even though it is possible to find waterproof wrapping or other types of protective cases for electronic devices, a new technology-enabled the release of diverse waterproof smartphones and tablets in 2013. This method is based on a special nanotechnology coating a thousand times thinner than a human hair which protects electronic equipment from damage due to the penetration of water. Several manufacturers use the nano coating method on their smartphones, tablets, and digital cameras. A 2013 study found that nanotextured surfaces using cone forms produce highly water-repellent surfaces. These nanocone textures are "superhydrophobic" (extremely water-hating).