from the original data

See: authentic
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While a strict chain of custody does not need to be maintained for data copies, they should be strictly controlled and protected in a separate physical location from the original data, such as in a second safe or locked cabinet, with access to the copies restricted and audited.
The ODBC data source can be instantaneously accessed through a portable handheld device, allowing the user to add, delete, and edit images, voice, video, and data directly from the original data source.
com) SoftCD(TM) technology, which compares the original and new versions of any digital data and creates an amendment file incorporating only the variations from the original data.