In the first shot that we view, we see a sort of code that looks like it comes from a computer, the viewer at the moment doesn't actually know what this is, but they automatically get the impression that this film must be about computers or hacking of some sort. We start to get the effect when it seems like we are tracking into the code to see what is on the otherside of this computer screen. This tracking movement then starts to make the audience feel uneasy as they don't know what, but they know something strange is about to happen, and they don't like the idea that they don't know what this is. They also feel uneasy with the fact this couldn't happen in real life, which gives a sense of sci-fi.