They way in which the experiment was done reminds of some hackers technique. Hacker hacks a website, but don’t cause any damage to the system. It’s done in order to show the system’s weak points. That’s basically what those artists did. The idea of information privacy is a theme to debate. The system itself also was always a topic to big discussions.
From one point of view it makes our life easier and more comfortable, but from another point of view it just makes us manageable and transparent. Having all information about us online and offline (in different governmental databases) makes it easy to manipulate this information. It makes it easy to use it against us. But that’s also a part of modern society, necessity for the system to work properly. You may agree or may disagree with this, but you are a part of it, you made this system live.
While most just expect from “developers” to make the system better, some find a week points and tell others about those points. The only problem, that in case of websites, fixes are done and done fast, but in case of The System, no changes made. I think if I’d want to I’d able to carry out the same experiment even now in most of the countries.