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Software components for data protection, secure storage and transfer

Support for virtual file and folder (directories) in CallbackFilter

Starting with version 3 CallbackFilter supports "creation" of virtual files and folders (directories). Try CallbackFilter 4 for free.

What are virtual files

Virtual files are visible to Windows and applications, but they don't exist on the actual filesystem. CallbackFilter driver intercepts requests going to the filesystem for such files, and calls your code instead. Virtual files live as long as your application is running. When your application is closed, the files are gone (or become inaccessible, depending on implementation).

How virtual files are used

Potential uses of virtual files are numerous.
For example, you can let the user see and work with files that are actually located elsewhere. Or you can control the application writing data to some location and instead store the data in another location. You can make some application believe that the file is present, while in fact there's no such file on the disk.

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For more details about CallbackFilter, refer to CallbackFilter description, or download your own copy to try CallbackFilter 3 for free. Ready to pull the trigger? Refer to the Prices and Ordering page for complete licensing information.


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As of July 15, 2016 EldoS business operates as a division of /n software, inc. For more information, please read the announcement.

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