The Cumberland Library System near Fayetteville, NoState has instituted a remarkable 30 year old technology to keep track of their books. I do not want to make it out like this is not a big deal for them (the tech costs a lot as well as man hours to place all those stickers), but the linked article makes it sound like this is a magic trick preformed by David Copperstein.
You place the books on the mat and the computer knows what they are? Burn this witch palace to the ground!
What's this?! The librarian's handheld telephone talks to space? Truly this is a place of wonder...
Cumberland libraries use high-tech radio technology to check out books - Fayetteville Observer