Invention Grant
US07800496B2 Methods, devices and security systems utilizing wireless networks and detection devices 有权
使用无线网络和检测设备的方法,设备和安全系统

Methods, devices and security systems utilizing wireless networks and detection devices
Abstract:
Security systems, methods, and devices for monitoring a region for movement utilize a wireless network detector having a directional antenna and a transmitter for transmitting the detected wireless network signal strength to a computer. Analysis of changes in the signal strength measurements determines the presence of movement requiring a response.
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