Answer:
The word countenance mean a look or expression on their face. I don't kniw if this helps, but I tried.
Explanation:
The repetition of the word devices makes the reader feel like all of technology is the same, lumped into one category. He doesn't separate television from cell phone, and this makes the reader feel like all technology is meant to accomplish the same goal, no matter what it says its purpose is. Also, the word "device" shows that the people behind it have an agenda, that they are using these pieces of technology as "devices" to achieve a goal.
