CUPERTINO, CA - MARCH 21: An attendee inpsects the new iPhone SE during an Apple special event at the Apple headquarters on March 21, 2016 in Cupertino, California. Apple announced the iPhone SE and a 9.7' version of the iPad Pro. Rumors are swirling that Apple may launch a new iPhone in September.(Photo by Justin Sullivan/Getty Images)
In its patent, Apple said it envisioned the technology being used in its iPhones and iPads.
The patent comes nine months after a different piece of information launched rumors of a waterproof iPhone. Reports indicate that Apple might be looking to ditch the headphone jack, one of the easiest places for water to seep through.
Some industry observers doubt that waterproofing is the main motivation for getting rid of the headphone jack, though, since Samsung made its phones water-resistant while still keeping the jacks.
Bloomberg reported earlier this month that removing the jack could make room for a second speaker. Others have argued that because the new headphones would be digital, Apple could also include software to prevent users from listening to illegally downloaded music.
Apple currently offers no waterproof smartphones. All three of Samsung's leading smartphones are water-resistant.