These shelves with books can be found in some (very few) train stations in Tokyo. You are supposed to take a book, read it and return it. Nobody registers who takes which book. In the Spanish version of this post some people talk about how this system was introduced in some stations in Spain but all books disappeared after a while.
I’ve seen this only once, but I did not take a picture! Fortunately Roy and Danny did.
Picture by Dannychoo
Picture by Q-Taro