The most obvious feature by which you can tell the good women from the bad is their phone. If she uses an iPhone, it's safe to assume that she's a mindless Konsumopfer (the English language lackss a translation of this word, but it describes a person who is victim to the consumerist character of modern society) who desperately needs to fit in with the masses. But if she uses an Android phone, you know that you are actually facing a real person and not just an artificial product of consumerist society.