> However, it doesn't allow for as much modification as the original poster's idea.
My main point was the original poster's idea was probably focusing on the wrong kind of sensor for what he wanted to do. He could still network a bunch of motion sensors.
Also, I'd dispute the idea that my proposals were less "modifiable." If only because they're far easier to implement and a couple of orders of magnitude cheaper, so it's practical to replace if more capabilities are needed.
My main point was the original poster's idea was probably focusing on the wrong kind of sensor for what he wanted to do. He could still network a bunch of motion sensors.
Also, I'd dispute the idea that my proposals were less "modifiable." If only because they're far easier to implement and a couple of orders of magnitude cheaper, so it's practical to replace if more capabilities are needed.