I think there are also a couple of other sensors which also help detect movement and waving. They call them "occupancy" and "activity" sensors. http://support.

I think there are also a couple of other sensors which also help detect movement and waving. They call them "occupancy" and "activity" sensors. http://support.nest.com/article/Learn-more-about-the-Nest-Protect-sensors http://support.nest.com/article/Learn-more-about-the-Nest-Pr...