How Ted Confessioned to the Bombs

The FBI spent 24 hours searching the home of Ted Kaczynski. They found a live bomb under his bed that had been ready to be shipped. He also had a coded journal, which looks crazy if you ever see it. It is just a grid paper and every single little grid is filled in with a number. There's a code for it somewhere. So they do end up decoding that and that's how they get him because that's really, he literally confessed to all of the bombs.