The prison phone business is a wildly complex, fiercely secretive and enormously lucrative industry. Over the last decade, [this] business has become a scandalous industry, characterized by lawsuits, exorbitant fees, high phone rates and monopolistic relationships between public jails and private companies that openly offer kickbacks to local sheriffs. This is about shifting the cost of the police state onto the backs of the poor people being policed," says Paul Wright, executive director of Human Rights Defense Center. [There are] an estimated 2.2 million inmates currently behind bars in America. If you've ever tried to call an inmate, there's a good chance you've heard of Securus, or its main competitor, Global Tel*Link (GTL). The two companies reportedly make up about 80 percent of the prison phone business, which drives about $1.2 billion per year in revenues. In the last few years, Securus, especially, has emerged into one of the largest, if not most secretive, prison technology companies in the business. The company employs 1,000 associates in 46 states, contracts with 2,600 jails and prisons across North America, and provides service to more than 1 million inmates and their families. Securus earned $114.6 million in profits 2014, on revenues of about $404 million. When companies like Securus send proposals to jails and prisons around the country, they offer a percentage of the call rate back to the sheriff's office. It's typical for commissions to range anywhere from 40 percent and 80 percent.