Steve Jobs, Phone Phreaker

Reading between the lines.
Feb. 1 2013 11:20 PM

Phreaks and Geeks

Before Steve Jobs and Steve Wozniak invented Apple, they hacked phones.

Phreakers Bob Gudgel, Jay Dee Pritchard, and John “Captain Crunch” Draper, 1971.
Phreakers Bob Gudgel, Jay Dee Pritchard, and John “Captain Crunch” Draper, 1971. From Exploding the Phone.

Photo courtesy of Bob Gudgel.

One of the most heartfelt—and unexpected—remembrances of Aaron Swartz, who committed suicide last month at the age of 26, came from Yale professor Edward Tufte. During a speech at a recent memorial service for Swartz in New York City, Tufte reflected on his secret past as a hacker—50 years ago.

“In 1962, my housemate and I invented the first blue box,” Tufte said to the crowd. “That’s a device that allows for undetectable, unbillable long distance telephone calls. We played around with it and the end of our research came when we completed what we thought was the longest long-distance phone call ever made, which was from Palo Alto to New York … via Hawaii.”

Tufte was never busted for his youthful forays into phone hacking, also known as phone phreaking. He rose to become one of Yale’s most famous professors, a world authority on data visualization and information design. One can’t help but think that Swartz might have followed in the distinguished footsteps of a professor like Tufte, had he lived.

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Swartz faced 13 felony charges and up to 35 years in prison for downloading 4.8 million academic articles from the digital repository JSTOR, using MIT’s network. In the face of the impending trial, Swartz—a brilliant young hacker and activist who was a key force behind many worthy projects, including the RSS 1.0 specification and Creative Commons—killed himself on Jan. 11.

“Aaron’s unique quality was that he was marvelously and vigorously different,” Tufte said, a tear in his eye, as he closed his speech. “There is a scarcity of that. Perhaps we can all be a little more different, too.”

Swartz was too young to be a phone phreak like Tufte. In our present era of Skype and smartphones, the old days of outsmarting Ma Bell with 2600 Hertz sine wave tones and homemade “blue boxes” seems quaint, charmingly retro. But there is a thread that connects these old-school phone hackers to Swartz—common traits that Tufte recognized. It’s not just that, like Swartz, many phone phreaks faced trumped-up charges (wire fraud, in their cases). The best of these proto-computer hackers possessed Swartz’s enterprising spirit, his penchant for questioning authority, and his drive to figure out how a complicated system works from the inside. They were nerds, they were misfits; like Swartz, they were a little more different.

In his new history of phone phreaking, Exploding the Phone, engineer and consultant Phil Lapsley details the story of the 1960s and 1970s culture of hackers who, like Tufte, devised numerous ways to outwit the phone system. The foreword of the book is by Steve Wozniak, co-founder of Apple—and, as it happens, an old-school hacker himself. Before Wozniak and Steve Jobs built Apple in the 1970s, they were phone phreaks. (Wozniak’s hacker name was Berkeley Blue; Jobs’ handle was Oaf Tobar.)

In 1971, Esquire published an article about phone phreaking called “Secrets of the Little Blue Box,” by Ron Rosenbaum (a Slate columnist). It chronicled a ragtag crew sporting names like Captain Crunch and the Cheshire Cat, who prided themselves on using ingenuity and rudimentary electronics to outsmart the many-tentacled monstrosities of Ma Bell and the FBI. A blind 22-year-old named Joe Engressia was one of the scene’s heroes; according to Rosenbaum, Engressia could whistle at exactly the right frequency to place a free phone call.

A joke ad posted, possibly by the Bell of Pennsylvania security department, at Carnegie Mellon.
A joke ad posted, possibly by the Bell of Pennsylvania security department, at Carnegie Mellon. From Exploding the Phone.

Image courtesy Ken Hopper.

Wozniak, age 20 in ’71, devoured the now-legendary article. “You know how some articles just grab you from the first paragraph?” he wrote in his 2006 memoir, iWoz, quoted in Lapsley’s book. “Well, it was one of those articles. It was the most amazing article I’d ever read!” Wozniak was entranced by the way these hackers seemed so much like himself. “I could tell that the characters being described were really tech people, much like me, people who liked to design things just to see what was possible, and for no other reason, really.” Building a blue box—a device that could generate the same tones that the phone system used to route phone calls, in a certain sequence—required technical smarts, and Wozniak loved nerdy challenges. Plus, the payoff—and the potential for epic pranks—was irresistible. (Wozniak once used a blue box to call the Vatican; impersonating Henry Kissinger he asked to talk to the pope.)

Wozniak immediately called Jobs, who was then a 17-year-old senior in high school. The friends drove to the technical library at Stanford’s Linear Accelerator Center to find a phone manual that listed tone frequencies. That same day, as Lapsley details in the book, Wozniak and Jobs bought analog tone generator kits, but were soon frustrated that the generators weren’t good enough for really high-quality phone phreaking.

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