No library cards, no machines, no complicated procedures－now readers just need their smartphones to borrow books from Shanghai Library. After an eight-month trial involving more than 2,400 of its foreign-language books, the library has expanded the service to cover all its 500,000 volumes available for borrowing from Tuesday. Readers will no longer have to line up to use a self-service machine. Instead, they just have to scan the QR code on a book before taking it home.