1. Means for uncovering social networks of inmates and non-inmates, comprising: means for storing in a database phone numbers dialed by inmates in a prison, means for prompting an inmate dialing a non-inmate to speak his or her name, means for prompting the speaking of the name of said non-inmate, means for generating voice characteristic data from the speaking of the name of said non-inmate, means for storing in a database said voice characteristic data, means for storing in a database digital audio data of said inmate speaking his or her name, and means for storing in a database digital audio data of the name of the non-inmate being spoken.