This part seems eerily prescient, doesn't it?

> "I think it's an important step in pioneering this work, but later on we'll probably see more exciting things in the way of digital cash," said Philip R. Zimmermann, a computer security consultant in Boulder, Colo., who created the PGP program.

> Digital cash, Mr. Zimmermann explained, is "a combination of cryptographic protocols that behave the way real dollars behave but are untraceable."

> In other words, they are packets of worth that have value in cyberspace, the same way dollars have value in the real world, except that they have the properties of anonymity, privacy and untraceability. Many details remain to be worked out, Mr. Zimmermann said.