Several libraries in the United States have begun deploying Bluetooth Low Energy (BLE) beacons to be used with an app to reach out to patrons. Many libraries are already using passive radio frequency identification technology to automate the checking out and returning of books, but BLE technology offers libraries a new wireless tool. Capturing the attention of a distractible public is a growing challenge for libraries that have historically been known as a quiet institute rich with books and media, but not much beyond that. Nowadays, people young and old, whether or not they are library users, have become increasingly focused on their smartphones, which makes them much harder to engage.