Rugged Cams Workhorse DVR 16 Channel - Manual (Page 47)

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4-7-5. Watermark
This system uses Watermark technology to detect video forgery and alteration.
Fragile Watermark technology is used.
Fragile Watermark technology detects the locations and types of counterfeited or altered video. It has
been designed for purposes of authentication and to guarantee integrity or the video.
In Workhorse 120-4, the watermark is inserted into all recorded video data; any forgery and alteration
of the video is detected.