The creator of the "slide to unlock" function is leaving Apple, according to a report by Reuters.
Apple's Greg Christie, who led Apple's "human interface" team that designs software for products, is leaving over a falling out with Senior Vice President Jonathan Ive.
Apple has not commented publicly regarding the departure yet.
Christie has been a vital member of the Apple team, as he developed a number of functions used by people all-over the world.
His name is listed on the patent for Apple's "slide to unlock" function, according to The Wall-Street Journal.
That key patent is one of at least a dozen involved in Apple's ongoing lawsuit against Samsung Electronics.
The lawsuit is currently being heard in California federal court and it will likely take several years until a verdict is reached.
Christie's name is listed as an inventor on approximately 100 patents, and has 31 more applications pending with the patent office, according to The Wall-Street Journal.
Christie is listed as an inventor on nearly 100 Apple patents and has 31 more applications pending with the patent office, according to the newspaper.
Christie's departure was first reported by tech website 9to5Mac.
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