What symbols deck do you know? any information about them?

That's a bit diffuse.
What do you mean? ESP, Tarot signs?
Any further info?

Sean Taylor from Australia produces a deck called Symbology that replaces the four suits with four colors and 13 unique symbols ... any card effect can be done with this deck but now it plays very different ...

The Symbology Deck can be seen here:

http://www.taylorsmagicshop.com/prod406.htm

Richard

Symbology is an excellent tool! Four principles built into one deck. Most verstile symbol deck around today. Comes in an authentic looking box for ESP testing.

Your other option for a nice ESP symbol deck that IMHO looks even more authentic than Symbology is Beyond ESP 2. This doesn't quite have the versatility of Symbology however it is probably the most authentic looking and deceptive ESP symbol deck out there.

Cheers,
Al