"The Beginning of the End of Cash," by Glenn Zorpette (212-419-7580, [email protected]): Cash's role is waning, as mobile, encryption, and other technologies let us plug directly into the digital economy. "Let a Thousand Currencies Bloom," by David G. W. Birch (Philip Ross, 212-419-7562, [email protected]): The mobile phone will create a new monetary order based on a host of currencies not backed by any government. "Blood and Money," by Eliza Strickland (212-419-7505, [email protected]): Banks in Japan use vein-scanning biometrics in their ATMs. Could this technology turn our hands into wallets? "Cashing Out," by David Wolman (Ariel Bleicher, 212-419-7559, [email protected]): Is it possible to create your own cashless society? One man tried it, and it tested his resources. "A Brief History of Money," by James Surowiecki (Jean Kumagai, 212-419-7551, [email protected]): The evolution of money through the millennia is one of increasing abstraction and complexity--and that's okay. "The Cryptoanarchists' Answer to Cash," by Morgen E. Peck (Joshua J. Romero, 212-419-7550, [email protected]): Bitcoin has resurrected the dream of private, irreversible online transactions. "Virtual Currency Gets Real," by Rachel Courtland (212-419-7920, [email protected]): The rise of Facebook Credits and other virtual currencies could pose some economic risks. "Quantum Cash and the End of Counterfeiting," by Michael Brooks (Eliza Strickland, 212-419-7505, [email protected]): Physicists are experimenting with quantum tricks to create money that can't be copied. "Phone-y Money," by Philip E. Ross (212-419-7562, [email protected]): Schemes enabling smartphones to emulate credit cards are spreading everywhere but in the United States. "No More Waiting on Near-Field Communications," by Joshua J. Romero (212-419-7550, [email protected]): Phones already have enough technology to make mobile payments work. "The Microsecond Market," by David Schneider (919-942-4499, [email protected]): The financial industry's high-frequency traders vie to shave millionths of a second from their reaction times. "The Long Life and Imminent Death of the Mag-Stripe Card," by Jerome Svigals (Tekla S. Perry, 650-328-7570, [email protected]): The story of IBM's mag-stripe technology starts in the '60s and is about to come to an end. The Data: "The High Cost of Money," by Mark Anderson (Steven Cherry, 212-419-7566, [email protected]): What you pay for something is nothing like its cost to the seller.