Alerting when someone is in your room is only one of the features. It's main feature is a story mode where the user can take part. It will take you into a story about finding a villain but it will ask for your help to swing him through something, to punch, kick, hide, and so forth, to accomplish the mission. It will also ask questions about you such as, your favorite color your favorite hobby etc. the more you talk with it the more it learns you and can respond sarcastically to your commands.