I don't think it's about the pose. It's about attention. To interact with a system we have to focus on it and that means we have to take our focus off of everyt

I don't think it's about the pose. It's about attention. To interact with a system we have to focus on it and that means we have to take our focus off of everything else. Computers are notoriously bad at understanding us if we aren't focused on them exclusively. That's why so many people are trying to get voice interaction right. It's the most natural way to split our attention. A lot of this IoT nonsense is trying to discover a few corner cases where computers can do sensible things without a human needing to specifically focus on them. Like automatically reordering cereal, or unlocking your phone when you get close, or adjusting the temperature when you leave the house.