KEY files are also known as Keynote Presentation files. They are categorized as data files and are usually used by Apple, Inc. These files refer to the presentations that were created using Apple's Keynote presentation software wherein they contain slides, texts, XML data, images and transitions that are mostly used in a certain presentation. KEY files are usually found in the Mac OS X package
How to open a Keynote (.key) file in Powerpoint on your PC May 22, 2018 Open Key File - Open File These files usually contain the registration data or security codes written for software programs for encryption or decryption. These files are often created after a software has been registered and are usually stored in the same directory as the application where it was installed or in some system preferences folder.
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