Yeah, I noticed that your hacking possibilities are very limited.
Although there is a lot of electronic and computers you can't actually do that much. (Except the one points where you could activate the auto turrets.
That was cool.)
WARNING: Spoilers!!
For example the level with those uber strong sentry bots. I always failed because of those cameras noticing me so I first tried to hack them in the surveillance room but I could spam click everything including the shelfs and nothing happed. I was kinda disappointed but then I got the brilliant idea to just turn the power off.
But the power was locked. A hacking option would have been awesome at this point since this would encourage non-combat builds even more.
Of course it's just the alpha demo but I would really like to influence the enviroment even more. I noticed that there were power boxes but you couldn't reach them and I hope the next update will allow you to do it to cause panic and chaos.