Comcast Turns Millions of Routers into Motion Sensors

U.S. telecom operator Comcast has unveiled a new feature, WiFi Motion, which transforms home routers into motion sensors. The update for the Xfinity Internet app, available since August 18, enables this capability on compatible devices at no extra cost. The technology operates by analyzing changes in Wi-Fi signals between the router and connected devices to detect indoor movements.

WiFi Motion is integrated into the Xfinity Shield service, which also includes advanced protection against cyber threats like malware and phishing attacks, as well as enhanced parental control tools. The feature supports three operational modes: Home Watch (home monitoring), Away Watch (tracking activity when owners are away), and Dark Watch (night mode). To use the technology, users need an XB7 router or newer.

According to Kohposh Kudy, Comcast's senior vice president, the company spent three years refining Wi-Fi sensing algorithms to minimize false alarms. The technology is now ready for mass adoption and can serve as a basic home security solution. However, Comcast does not view it as a replacement for traditional video surveillance systems but rather as a supplementary tool for average users.

In addition to WiFi Motion, the Xfinity Shield service offers a paid subscription, Xfinity Shield Select, for $15 per month. This includes an AI-powered smart camera with alerts for recognizing people, pets, and packages, as well as door and window sensors. The Wi-Fi sensing technology has also caught the attention of industry players like ADT, which recently acquired Origin Wireless, a company specializing in similar solutions.

Looking ahead, Comcast plans to expand WiFi Motion's capabilities, introducing more complex use cases. The technology could be applied not only for security but also for monitoring elderly individuals or tracking children without requiring additional hardware.