It's not so much Hello Barbie's talking -- it's her listening that has parents up in arms. Here's how Hello Barbie works: A kid presses on the doll's belt buckle and speaks into a microphone in the doll's necklace. An AI system processes and analyzes that speech in the cloud. Responses are then streamed back to the doll, who replies to the kid -- all over a secure WiFi connection to the Internet.