DTMF stands for Dual Tone Multi Frequency. Using these tones will - in theory - grant you special access to switch functions through telephone carriers.

Due to the highly illegal nature of creating any one of these dialers, I won’t go into the actual details required to turn your iPod - or any other MP3 player - into a tone dialer. I’ll give you a reassuring kick though on getting a Blue Box iPod.

• Download the necessary WAV tones here
• Import into iTunes and create playlist
• Set a 5 second delay between tracks before importing on to iPod
• Place earphone on the mic end of a telephone and play

For a more technical - and educational reading - on how a Blue Box works, point your browser here.

Disclaimer: This is for experimental uses only. Creating a blue box, red box, or green box is illegal.