[Kanji_The_Wanderer]

I heard that Japan started Techno and Nightclubs.

Is this true?

From what I hear, they are extremely popular, and there are a lot of underground clubs at night that people go to. So I am sure that they are easy to find, just ask some young folk.

PS. Maybe they want to ID foreigners to make sure that they are mature enough, and won't start any trouble. Since a lot of places aren't as respectable as they are. (This is just a guess)