This is a system currently being sold on Ebay. I tested the system over shoes 300 to 308 in the Zumma baccarat tester book and had progression losses on shoes 301, 302, 307, 308. I would have to win the next 91 shoes without a loss to have a 96% shoe win rate the seller claims with this system. With the 4 losses in the first 9 shoes I don't think that is likely.
Dennis