Radical High: Fon Phreaker’s Recipe Book (PDF Edition)

The telephone revolutionized communications.  In the modern 1980s, you can now converse with almost anyone on Earth!  That is, if you can afford it.  It takes lots of money to maintain essentially the world's largest machine, so you'll pay dearly to use it... unless you're a "Fon Phreak". 

This title is also available as a print edition in a separate listing.