Basic Principle
Information that drives the video display takes the form of high frequency electrical signals. These oscillating electric currents create electromagnetic radiation in the RF range. These radio emissions are correlated to the video image being displayed, so, in theory, they can be used to recover the displayed image.
Read more about this topic: Van Eck Phreaking
Famous quotes containing the words basic and/or principle:
“There’s a basic rule which runs through all kinds of music, kind of an unwritten rule. I don’t know what it is. But I’ve got it.”
—Ron Wood (b. 1947)
“The principle of all sovereignty resides essentially in the nation.”
—French National Assembly. Declaration of the Rights of Man (Sept. 1791)