A Japanese paper reports on reservation-only bookstores. Browsers pay by the hour, but that’s not the only innovation:

“Most of the 2,500 books at the store are used copies. Each is contained in a paper bag so they cannot be read without opening the bags. Should a potential customer decide not to purchase a book in a bag he or she opened, the customers must leave a brief message about the book for the next person.”

(via Shelf:Life)