Most technologies go through a stage when everything seems possible. Personal computers in the early 1980s, the internet in the late 1990s and mobile apps around the beginning of this decade were like that.
But so was the first unboxing of a Galaxy Note 7. In time, either suddenly or gradually, reality sets in.
The internet of things still looks promising, with vendors and analysts forecasting billions of connected devices that will solve all sorts of problems in homes and enterprises. But the seams are starting to show on this one, too. As promising as the technology is, it has some shortcomings. Here are a few.