Protection against TEMPEST?

[Sarad AV]

hi,

I came across this link through this months Cryptogram.
http://oculislabs.com/Products/ChameleonP.htm
The link reads....

"Oculis
Labsb Chameleon System protects your monitor against eavesdropping. With
Chameleon running, you can read your screen normally, but no one else can.
Chameleon protects against the shoulder-surfing eavesdropper as well as
opponents using sophisticated TEMPESTbtype electronic surveillance."


I am
curious to know how it prevents TEMPEST?

Other links
http://oculislabs.com/government.htm

Whitepaper
http://oculislabs.com/Oculis_Whitepaper_1.pdf

Also, is not clear the idea of
you seeing something at one gazepoint and some other thing at another
gazepoint.

Any insight is welcome.

Thank you,
Sarad AV