Prisoners' code word caught by software that eavesdrops on calls

SAY it out loud and the machines will know. Search engines are moving beyond the web and into the messy real world. Every call into or out of US prisons is recorded. It can be important to know what's being said, because some inmates use phones to conduct illegal business on the outside. But the recordings generate huge quantities of audio that are prohibitively expensive to monitor with human ears.