Here’s how it works. When investigators find something they think might have been made with illegal wood, they send it to the lab. The lab takes a small sample and puts it in the machine. The machine reads the unique combination of chemicals given off by the wood, and spits out a reading that the scientists can compare to other samples in a growing database. If the wood is a match for a rare or endangered species, the authorities can take action against the people using illegally forested wood.