In this chapter, we explored Bluetooth Low Energy Beacons and discussed their applications with real-life scenarios. We also discussed BLE protocols such as Google Eddystone and Apple iBeacon, two of the most widely used protocols in beacon technology. The chapter later discussed a practical application built on Android and iOS using Estimote beacons. The discussion continued with a simple implementation of a physical web-based URL broadcast using Estimote. Finally, we discussed the Estimote cloud interface to view and control your beacons using the cloud. In the next chapter, we will move forward and discuss an even more complicated example of Bluetooth indoor location using Estimote beacons.