The emdash button comes with a reusable adhesive and a hook. Keep an emdash button handy next to your shelves in the living room, den, kitchen, bath, laundry, tree house, or anywhere else you might run out of books. When you need new reading material simply press an emdash button, and LibraryThing quickly discovers what you want to read next and sends it to you so you can skip those stress-filled trips outside your home.