Jensen, Jon: Duo-Tech the Book ©2000 Jon Jensen Softcover, comb-bound, 8.5x11", 55 pages

Image courtesy MagicGuy.net

Comments: Duo-Tech and its variations. Basic Effect - "The spectator shuffles his own deck of cards and selects one (no force). He opens the prediction and it matches his card! The prediction has been on the table the entire time and never touched by the magician! Everything can be immediately examined!"

Contents (from book ToC):

7 Introduction
9 The Original Duo-Tech
10 The Shim Card
13 The Magnetic Wallet
21 Money For Nothing
24 Duo-Tech II
25 The Notebook
31 The Spectator Picks The Four Aces
34 The Ultimate Comedy Prediction
38 Double Switch
42 Sticky Business
46 No Gimmicks Allowed
50 The Miracle Signed Card To Wallet