Embedding Information
The technique of embedding significant information in a hidden form in a medium has been used in many ways, which are usually classified according to intent:
- Watermarks are used to show that items are authentic and not forged.
- Steganography is used to hide a secret message in an apparently innocuous message, in order to escape detection.
- A canary trap hides information in a document that uniquely identifies it, so that copies of it can be traced.
- Screener versions of DVDs are often marked in some way so as to allow the tracking of unauthorised releases to their source.
Read more about this topic: Canary Trap
Famous quotes containing the word information:
“I am the very pattern of a modern Major-Gineral,
I’ve information vegetable, animal, and mineral;
I know the kings of England, and I quote the fights historical,
From Marathon to Waterloo, in order categorical;”
—Sir William Schwenck Gilbert (1836–1911)