A Bluetooth Beacon is a wireless device that periodically broadcasts a Bluetooth Low Energy advertising packet, that is received by a smartphone or other Bluetooth master device and used to determine the position with respect to the beacon itself. It is like a set of mini-radio towers, installed throughout an area or building. Instead of rising high into the air as towers do, it sends out radio signals encoded with the information set by the owner or user. As with radio, the data sent out and received is almost instantaneous. Smartphones, tablets, and other readers seek out Bluetooth signals as they pass through a beacon’s broadcast range. This allows providing “context-aware” information to the mobile user, opening up the possibility to connect the online (virtual) world with the offline (real) physical world.