Comment by mar_buffalo

I've worked on something to do this, it' not perfect. It listens for 24 hours, learns what is 'normal'. Calibrates strength of signal (dogwalker on sidewalk, ignore) getting closer than that, between 10pm and 5am, turn on a light or two. Not meaning to spam, but it's at wispyalert.com . Any thoughts, I'd be interested to hear.