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.
Classic Bluetooth can handle the transmission of large amounts of data, and can only be used with a one-to-one connection. These applications tend to consume more power, which makes a beacon more costly to maintain, and taxes the battery of any connected mobile device, making it slightly impractical. It is generally believed that the radius of a Bluetooth beacon won’t exceed 10 meters, but depending on the power, Classic Bluetooth can also reach as far as 100 meters.
Bluetooth Low Energy (BLE) is one of the best technologies available for transmitting data at relatively high speeds, which is a plus for those with a low power budget. One of its benefits is its simplicity. As long as you have a device that scans for Bluetooth data, you can receive this information, which is also the principle of the BLE Beacon, and the current technology can achieve a 100-meter radius. However, it does have a disadvantage, which is that the amount of data that can be transmitted is relatively small. In addition, Bluetooth Low Energy also has a feature, which can distribute data in the form of a Bluetooth broadcast (instead of a one-to-one connection) in the space around the device. This makes the data accessible to anyone with the right key.
Classic Bluetooth can handle the transmission of large amounts of data, and can only be used with a one-to-one connection. These applications tend to consume more power, which makes a beacon more costly to maintain, and taxes the battery of any connected mobile device, making it slightly impractical. It is generally believed that the radius of a Bluetooth beacon won’t exceed 10 meters, but depending on the power, Classic Bluetooth can also reach as far as 100 meters.
Bluetooth Low Energy (BLE) is one of the best technologies available for transmitting data at relatively high speeds, which is a plus for those with a low power budget. One of its benefits is its simplicity. As long as you have a device that scans for Bluetooth data, you can receive this information, which is also the principle of the BLE Beacon, and the current technology can achieve a 100-meter radius. However, it does have a disadvantage, which is that the amount of data that can be transmitted is relatively small. In addition, Bluetooth Low Energy also has a feature, which can distribute data in the form of a Bluetooth broadcast (instead of a one-to-one connection) in the space around the device. This makes the data accessible to anyone with the right key.
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To understand how BLE beacons work, let’s look at an example of an exhibition hall that has deployed beacons.
• The exhibition hall has Bluetooth Beacons in different locations
• A user enters the exhibition hall.
• The APP opens, and then scans and finds the local Bluetooth Beacons.
• The APP calculates the distance between different beacons, based on signal strength.
• Through calculations, it is possible to roughly determine the user’s location in the exhibition hall and display it on the APP map.
The data broadcast by the Bluetooth Beacon can be set, and can correspond to anyone in the form of a number. The company puts a gateway in place that can scan Bluetooth Beacon data. The gateway scans the company’s Beacon data in real time, and then matches that data with the corresponding staff code in the background, in order to keep track of who is in a certain place at a certain time. In this manner, a company can keep track of employee location throughout the building or facility.
