Kairo: Why did he go through the door?

So this cinema also known as "Pulse" I have actually sent he american version first. Let me start by saying that the American version has alot more jump scare tactics rather than the feeling with dread that the Japanese version does. With that of the way I would say that I greatly prefer the Japanese version because I think it touches and addresses alot of the social issues that comes with suicide within the culture. I do have to say though the moment I was like are you fucking kidding me was when Ryosuke went into the red taped door. Like it was one of those moments that you just find yourself commenting on how dumb this choice could possibly be for EVERYONE involved. Probably the most frustrating thing about it in all honesty. Looking back I love the way they just portray ghosts in jhorror. In this movie they especially use it as the slow moving ghost which also begs the question as to why not most of them run? I think it truly encompasses fear and what it means to be afraid. 

I wish they would explain the red tape thing more. Perhaps I didn't catch It the first time around but the only time it is addressed is with the printer and it saying that it keeps them out. But why? Does it go back to a cultural thing? Does it have any meaning beyond that? Some theories have it that it isn't protection at all but the ghosts telling people to do this to act as a portal because they need more entrances into the world. Judging from the movie I would also come to this conclusion because the red taped rooms lead to nothing but bad for those who enter. Originally I thought it was to trap them in but I think it is more to create a portal that ghosts can wait in.