Dear Comcast customers: The internet gateway in your living room is now a motion sensor. It’s free of charge, and the data can go to law enforcement without further notice. What’s more, researchers have already shown that these same signals can identify exactly who is in the room.
On Tuesday, Comcast unveiled Xfinity Shield, a home security platform built entirely around the WiFi network. Its centerpiece, WiFi Motion, turns the leased gateway into a motion detector at no extra charge. According to Comcast, a typical customer has roughly 36 devices connected to their WiFi.
WiFi Motion works because a human body moving through a room disturbs the signal field between the gateway and stationary connected devices, like a printer or a game console. While the feature is opt-in and – according to Comcast’s rollout materials – does not track phones or reach through WiFi extenders, those limitations are choices Comcast made in software, not limitations of the technology itself.
Comcast says WiFi Motion works “without recording video, capturing images or identifying individuals.”
The company is not shy about identification as a product. The $15-a-month tier, Xfinity Shield Select, adds AI-powered cameras that identify people, pets, packages and vehicles. The free tier’s restraint is a line drawn one product SKU away.
Hellbound and Down 