Oz features the core method featured in all of the Zandman Book Test titles: Instantly know the word someone is thinking of without ever even seeing their word!

Nothing to memorize
No questions asked
Nothing is written down
Completely examinable

BONUS

Oz works along side the Mother of All Book Tests (pocket edition) by Ted Karmilovich. No matter where your spectator stops you as you rifle through the pages of Oz, you will know the first word on the same page number and the first long word on both open pages in MOABT! The cueing system is completely undetectable and hidden in plain sight.

WIZARD OF OZ Book Test(Online Instructions) by Josh Zandman