How smart devices can learn your habits.

Smart TVs and voice assistants like Amazon's Alexa and Google Assistant track users' behavior and habits to provide targeted advertising. Smart TVs use automatic content recognition systems to track viewed content, even when used as external displays. Researchers found that smart TVs upload tracking data when showing broadcasts from the TV antenna or content from an HDMI-connected device. Similarly, researchers simulated fake personas to test popular voice assistants and found that Amazon's Alexa achieved 100% accuracy in profiling users, while Google Assistant delivered imperfect profiling. Apple's Siri did not appear to profile users based on voice interactions. [Extracted from the article]