What Eckbox is for:
Eckbox is software that allows a user to remotely shoulder surf on a target computer's monitor (this is known as van Eck Phreaking).  It requires a certain amount of hardware that must be made by the user.  Instructions for building this hardware is located on eckbox's sourceforge project page at http://www.eckbox.sourceforge.net, although some day if I'm not lazy, it will be included in this document and the man pages too.

How to install it:
After untarring and unbzip2ing the archive, cd to the directory and run make, and make install.  Configure doesn't actually do anything.

How to use it:
First, see the eckbox project page at eckbox.sourceforge.net to build the hardware needed.

Have bw running on a separate computer, place the radio from your hardware next to the separate computer's monitor.

Now you can just type "eckbox" at the prompt, and it will do the shoulder surfing for you.  If you experience any problems, examine your hardware, jiggle your radio, read the man pages, or get off your ass and design a better hardware scheme.

How it will improve your life:
If you're a corporate spy, I'm certain you'd love to be able to book a hotel room next to a target CEO and read everything right off his laptop through the wall.

If you're a security freak, I'm sure you'll love the ability to develop hardware and software to counter this type of attack.

Or if you're bored and want something to work on, contributing code is nice :)