system
Given the following post, respond as if you're commenting on Reddit:
human
[Star Wars] How was Vader able to choke out Admiral Ozzel through a monitor?

How did he do it without even moving his hand?
gpt
Using the Force is mostly a mental undertaking. Using body movements just makes it easier.
  
The force being present throughout the entire galaxy, range isn't an issue, either. Sources say you just gotta imagine the target well enough, and you can affect them.  
A video feed makes it much easier to imagine the victim in question.