Even with the invention of the telephone lines, people could usually only afford to make local calls because long-distance phone calls were too expensive. Ryan goes on to explain how, in 1975, a man named Joe Engressia realized he could "kill geography" by whistling a specific pitch down the phone line. "Killing geography", in this sense, meant that paying for long-distance calls became obsolete when word of how to trick the phone system made its way around. In turn, this discovery paved way for the "phone phreaks", a group of kids that spent their time experimenting with controlling the phone system.
No comments:
Post a Comment