The deck does not say where CMG allegedly sources this voice data, be that a particular brand of smart TV, a smart speaker, or smartphone loaded with a particular app. It says that once it has used the voice data to identify an audience that is “ready-to-buy,” CMG builds a list of those audience members and uploads it to ad platforms to then target advertisements.
It sure sounds like CMG is selling advertising based on the idea that our smart devices are picking up our conversations and reporting them back to their company.