It uses radars so it doesn't add any new items. When you walk up to a radar you will be presented with a GUI in the top left. This will contain a list of all the other radars, which you can click to enable remote viewing. When remote viewing you have a different inventory and cannot move the viewport away from the target radar. You can still interact with, construct and destroy objects.

See this gif to see it in action:
http://gfycat.com/DiligentHomelyAcaciarat
This was originally part of my WIP mod, homeworld. It seemed useful in it's own right so I split it off.
Note, if you activate this mod on an existing map it will not have a list of existing radars. You need to destroy and re-place each radar you want on the network.
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