¬†What amazed me most when we were touring Japan, were the hardcopy hyperlinks we gradually learned to spot everywhere around us. At first I didn’t notice them, because there were already so many complicated signs surrounding me, and simply because I was not aware of the concept. But after a friend pointed them out to us, we saw that they are literally everywhere. On ads in the underground, on flyeres, and even on business cards and street signs. They look like this:
 
And they way they work is that you point your phone camera to the dotted square, which will be recognized as a hyperlink to a web page that contains detailed information on a specific topic. Since most Japanese mobiles have access to the internet you can immediately carry this info with you for further reference. Great!