How are two PCs ditinguished by the game if they are behind the same router?

[n00bl3t]

I had a talk with one of my friends recently, and he said, both of our computers have the same IP on the Internet, as servers see the IP of the router.
My question is: how are two different computers distiguished by the Disco Server, if they are behind the same router (thus they have the same IP)?

Either your friend is lying or he didn't check properly. Two people on the same home network cannot have the same IP. This would create something called an IP conflict, forcing one of the two users of the same IP address to not be able to connect at all. Both of you should have faintly similar IP addresses, though, both being in the same IP range. With that, you can be identified as two different people on the same network.

However, Discovery Freelancer also uses another way to identify specific systems. The installer comes with some sort of spyware which records and sends the serial number of your hard drive away to the owners, admins or whoever. I'm not entirely sure how it's performed, but it is. Plenty of people who could support my claims on this one. And yeah, it's relatively harmless, but it's still spyware.

The MAC address is unique to every network device and cannot be changed

You'd be surprised how easy it is to change a MAC address.

I can confirm that MAC address spoofing takes only a few minutes, if that.

Message me on Skype about spyware Doj.

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Anything I say is not intended as offensive, and to try and deliberately misinterpret it as such would be an attempt at trolling via misrepresentation.

It's not a conspiracy, it's localised bias. They're not intelligent enough to form a conspiracy.