The IP Code or the International Protection Marking states standards for electrical and electronic enclosures to ensure that they withstand sweat, fingerprints, dust and water. This is also a certification standard that helps users be very sure about the extent their mobile devices can be used in moisture or water. Such enclosures are IP67 rated, and devices such as phones, music players, and others need to use special buttons which work reliably even under water. Reed Switches and Reed Sensors are hermetically sealed and are the ideal solution as they can be mounted inside the enclosure, free from the external water and dirt, and tiny sliding magnets can be fitted on the outside to trigger them. These kinds of switches are also used in underwater cameras and flashes.