Well the article was about physical tracking of employee movements and also sensors on each employee that record and monitor what they say throughout the day, and metrics tracked such as "latency" which is how long between synergizing, strategizing and sharing with other partners (talking).
Regarding monitoring net usage, yeah, I've been in charge of that too. One thing I had to do was get rid of the massive porn stashes on everybody's computers. The guys that had extraordinary amounts of it or especially freaky stuff I'd often find a way to work into any conversation with them what I do. The premise would be that it was just a random conversation and nothing to do with them. Like if they say "Did you hear about Sue getting fired after she punched Betty in the face? That was some crazy stuff." I'd say "Oh yeah, there's a lot of crazy stuff going on here. Did you know I'm responsible for removing the porn from everybody's computer?" (they'd try not to react at this point) "Yeah, some people are into some pretty freaky stuff. I have to compile a list of what was found for management." (I didn't really do this.) "Can you imagine people using their work computer to store this stuff? Isn't that nuts?" They'd agree that was nuts and they'd be completely pale. And they'd stop downloading porn.
I would never use the work computer for anything non-work-related myself as I assume everything is tracked. Likewise with the phone. I use my own device when posting to places like here, or if I have to use a work computer for some emergency personal use it'll be through an encrypted proxy.
With all this employee physical tracking, if Bob and Sue are staying late on Mondays and spend 30 minutes together in the same bathroom... hm, management knows about that it would appear.