Comcast has introduced Wi-Fi Motion, a free feature that transforms newer Xfinity gateways into motion sensors. The technology detects interruptions to Wi-Fi signals and sends notifications through the Xfinity app when activity is detected inside homes. The opt-in feature works with XB7 and newer gateway models, offering basic home security monitoring. However, enabling it comes with privacy implications. According to Comcast's support page, the company may disclose information generated by Wi-Fi Motion to third parties without notice in connection with law enforcement investigations, legal proceedings, court orders, or subpoenas. The feature was first reported by The Verge. Customers can activate or deactivate Wi-Fi Motion through the Xfinity app, giving them control over whether to use the motion detection capability.

Comcast is expanding its Xfinity home security offerings with a new platform called Xfinity Shield, combining Wi-Fi-based protection with cybersecurity and family controls. The service is available at no additional cost for Xfinity internet customers, whilst a $15-a-month option includes an indoor camera, door and window sensor, cloud video storage and 24/7 urgent response. The platform aims to deepen customer engagement as Comcast faces pressure to retain subscribers in a competitive market. The company said the average Xfinity customer now connects 36 devices to Wi-Fi, whilst its network identifies and blocks an average of 30 million threats daily. Xfinity Shield integrates cybersecurity, Wi-Fi Motion and family controls within the Xfinity app, using AI capabilities to support the service.

Comcast has launched Xfinity Shield, a platform for intelligent home protection that transforms WiFi into an always-on layer of cybersecurity, physical and family protection. The platform leverages AI capabilities across Comcast's network and Xfinity Gateway technology. WiFi Shield is included at no additional cost for Xfinity Internet customers with Advanced Xfinity Gateways. It offers three layers of protection: Xfinity CyberSecure for network-level cybersecurity, WiFi Motion for detecting movement inside homes without cameras, and Family Settings for managing screen time and device limits. Comcast also introduced Shield Select for $15 per month, which adds an indoor camera, door/window sensor, cloud video storage and 24/7 emergency response. The company currently blocks an average of 30 million threats daily across its network. Xfinity Shield is available nationwide from 18 August.