Red Box (phreaking)

A red box is a phreaking device that generates tones to simulate inserting coins in pay phones, thus fooling the system into completing free calls. In the United States, a nickel is represented by one tone, a dime by two, and a quarter by a set of 5 tones. Any device capable of playing back recorded sounds can potentially be used as a red box. Commonly used devices include modified Radio Shack tone dialers, personal MP3 players, and audio-recording greeting cards.

Famous quotes containing the words red and/or box:

    At her best
    she is all red muscle, humming in and out, cajole
    by time. Where I go, she goes.
    Anne Sexton (1928–1974)

    Such as boxed
    Their feelings properly, complete to tags
    A box for dark men and a box for Other
    Would often find the contents had been scrambled.
    Gwendolyn Brooks (b. 1917)