Would you act differently if you knew that somebody constantly watches you to analyze your behavior and emotions? People will have to answer this question soon. While facial recognition and other biometric technologies are becoming more prominent in a range of services including password authentication and Internet of Things (IoT) devices, the pervasiveness of such technologies in our daily lives is becoming disturbing. And this says nothing about how fast they are spreading. Surveillance in retail stores that analyzes the behavior of shoppers, facial-recognition technology to expedite checking in to flights and hotels, targeted-marketing algorithms that deliver personalized ads by scanning the customer's face – these are a few examples, the tip of the iceberg, of how industries are using artificial-intelligence (AI) tech.