[rytor718]

A motion-detecting light isn't surveillance. It follows the same principle as your refrigerator light: when someone opens the door, shine the light so that they can see.

Surveillance is the monitoring of peoples activities. A very, very different thing from an energy saving device -- I'd even argue the opposite, as surveillance requires constant energy. To monitor someone in the current system is to literally follow them around. To use your example, surveillance would be placing sensors in your products so that when your customers buy them, you can follow them around and record how they're using it. But I don't think an energy saving light can be called surveillance.