What you are proposing, installing the game on two separate computers from one purchased copy and playing both simultaneously, is technically illegal and the very reason such authentication systems exist. You have basically admitted committing a crime on a public forum.Kingjackl said:It's installed on both computers, no disc required. Not to get all Master Race-y on you, but these aren't the limits of the consoles that apply here. It's the limits of the "one account, one install" DRM that nobody asked for. If this were the old days, we could both have it installed and be able to play it at the same time. At the moment, we have to make do with offline mode, but that means we can't play multiplayer with each other.Steve the Pocket said:If you had bought it for a console, you'd still only be able to play it on one system at a time because there's only one disc, so I don't see how this is so horrible exactly?Kingjackl said:This reminds me of my own situation with Dragon Age Inquisition, where we bought a boxed copy of the game (because fuck downloading it over Australian internet), then found you can only have it installed on one Origin account at a time, meaning we can't play multiplayer and have to kick each other off every time one of us wants to play it. We live under the same roof, these sort of restrictions are just asinine.
Legality aside, even if these were the days before such online authentication methods as Origin's "one account, one install", you would not likely be able to play both installs together as multiplayer. Before we had online DRM, there were offline methods. One of the more common was entering a key upon installation. For most multiplayer games which used this method, if two copies of the game had the same install key, they could not join each other in multiplayer. Another common tool was the "disc in drive" requirement, for which the game disc had to be in the computer in order for the game to run; clearly you could not have one disc in two computers at the same time. It has been a very, very long time since there were any games which could be installed multiple times from the same disc and then play together (without using hacks/cracks/etc., obviously). Your expectations of being able to engage in multiplayer with two installs from the same hard copy are completely unreasonable, in any time period.