Comcast adds motion sensing to routers with privacy trade-off
Original: Comcast adds motion sensing to millions of its newer routers, with a privacy catch
Why This Matters
ISP-level passive home monitoring raises new benchmarks for consumer privacy and data-sharing norms.
Comcast has launched Wi-Fi Motion, a free opt-in feature for Xfinity XB7 and newer gateways that detects motion inside homes via Wi-Fi signal interruptions and sends alerts via the Xfinity app. However, enabling it allows Comcast to share motion data with third parties without notifying users.
Comcast has rolled out Wi-Fi Motion, a new motion-sensing feature built into its newer Xfinity home gateways (XB7 and above). The free, opt-in feature works by detecting interruptions in a home's Wi-Fi signal to identify movement, then sends notifications to users through the Xfinity app when they are away from home. Comcast describes it as offering 'motion detection in their home and for a basic level of security.'
However, there is a significant privacy trade-off. According to an Xfinity support page, by enabling Wi-Fi Motion, users consent to Comcast potentially sharing data generated by the feature with third parties — without additional notice to the customer. The disclosed reasons include law enforcement investigations or proceedings, any dispute involving Comcast, or pursuant to a court order or subpoena. Comcast explicitly states it is not obligated to notify users when such disclosures occur. The feature was first reported by The Verge.