Blue box

Updated: 10/18/2022 by Computer Hope
blue box

A blue box is an electronic tone generating device first made famous by John Draper, aka Captain Crunch. It allows a user to enter numbers on a touchpad to make long distance phone call anywhere in the world for free by manipulating the phone system.

I don't think there would have ever been an Apple computer had there not been a blue box.
-Steve Jobs

2600, Hacker, Phreak, Security terms