] How-to: Phreaking your iPod (DTMF)

Long ago, the easy way to make a red box was with a micro tape recorder and a fist full of quarters. Put in the quarters, record the tones generated, retrieve quarters, replay tones as needed.

Long ago, it was someone anomalous to find someone with a sound generator near a payphone. Now, find someone without the resources to get a tiny little MP3 player. And find someone who would surprised to see someone carrying one about.

They are probably standing next to the person desperate to make free payphone calls.