>>There was no need for technology, nazis weren't checking the papers or bothering with recording anything. Most of what you said is true, except for this part

>>There was no need for technology, nazis weren't checking the papers or bothering with recording anything. Most of what you said is true, except for this part. Nazis did make actual recordings(as in - videos) of exterminations conducted in eastern Poland, especially in the area that is now Ukraine, conducted both by themselves as well as the local population(threatened with death otherwise of course), all to show back in Third Reich as proof fo barbarism in the countries they were conquering. I really recommend reading Stanislaw Lem's biography on that topic, since he lived in pre and in-war Lwów. >>The involvement of IBM was shameful, but it wasn't necessary. I mean, that's a bit of a weird argument to make. Yes, places like Auschwitz could have exterminated as many people as they did even without IBM's help, but the whole point is that Nazis liked efficiency and the tech allowed them to keep track of what they were doing(in the concentration camps, like you said outside of them Nazis didn't bother to track much of anything)