Abstract: Systems and methods for configuring and using a Wi-Fi-based motion detection system are provided. Devices connected to a wireless local area network (WLAN) may be configured to provide channel state information regarding radio frequency signals transceived by the devices. The channel state information may be received and used, e.g., by a wireless routing device, to detect motion within an WLAN environment. Detected motion, or the lack thereof, may be considered a Wi-Fi-based motion detection event, and various home-automation and/or security actions may be defined (e.g., through a user interface) to be caused by a determination that a Wi-Fi-based motion detection event has occurred. Among other uses, motion detection information may also be made available to third-party systems (such as emergency services systems), which may permit active querying of Wi-Fi-based motion detection systems to enable first responders to find occupants more quickly in case of an emergency.