How to obtain a 'unique machine ID' to help with authentication...

Unity Engine
1

Hi all, is there a way to obtain a ‘guaranteed unique machine ID’ in Unity?

I would like to authenticate game keys to unique machine IDs if possible.

Can it be done?

Thanks!! :slight_smile:

2

There are a number of choices, but a MAC address is probably one of the more commonly used “unique” ids. In .NET, you’d access that using System.Net.NetworkInformation.NetworkInterface.GetAllNetworkInterfaces();

Here’s an example:

http://stackoverflow.com/questions/3598403/how-to-get-mac-id-of-a-system-using-c-sharp

A quick look seems to indicate that the above is supported by Mono, though I’ve never used it.

Jeff

3

One addition… .You didn’t mention what device(s) you’re targeting. The MAC address would be appropriate for typical computer hardware (PC / MAC / etc), but likely not for mobile devices.

4

Oooh, many thanks jgodfrey, did the trick! :slight_smile:

5

If you’re using Unity, why not use SystemInfo.deviceUniqueIdentifier?

1 Like
6

Please note that a Mac address is specific to the network port, not the computer.
If my computer has multiple network ports (as my personal machine does - I have 2), if I unplug the network cable, move my PC, and plug my cable back into a different port, my Mac address will be different.

7

I noticed deviceUniqueIdentifier for my dev machine changed today. If this number changes often, that could be a problem for some uses.