Bluetooth is a standard wireless technology that enables personal wireless networks, making it possible to connect and communicate between devices such as smartphone, tablet, wearable and peripherals within a radius of tens of metres.
One of the main advantages of Bluetooth lies in its interoperable and standardised nature, enabling open solutions with low power consumption, low production costs and a range of 1 to over 100 metres.
The BLE (Bluetooth Low Energy) is an evolved version of Bluetooth, introduced from release 4.0 up to the more advanced 5.4.
This variant is distinguished by:
Thanks to these features, BLE has become a key technology for applications in various sectors, including retail, indoor geolocation and Wireless Sensor Network.
The user does not have to worry about turning off the Bluetooth connection of his smartphone once the data exchange operation is over; on the contrary, it is advisable to leave it always active in order to take advantage of the information services offered, for example, in the retail world, through the use of BLE Beacon tags (iBeacon in Apple parlance); this is also true in the emergency context generated by COVID19, in which the Immuni system, based on Bluetooth LE technology, notifies the user of the potential risk of contagion, having come into contact with a person who is positive for the virus.
In fact, the potential of BLE consists in enabling the connection between one’s smartphone or tablet (Apple, Android, Windows) and other Bluetooth Low Energy devices scattered in the surrounding environment, automatically receiving, without any voluntary action, information messages or data from sensors (Wireless Sensor Network).
BLE technology is based on the use of Beacon, small active battery-powered sensors equipped with an electronic circuit and antenna.
The Beacon BLE (Bluetooth Low Energy) are versatile and adaptable, with sizes varying according to battery capacity and desired autonomy.
Beacon BLE is a truly effective technology in the area of geolocation and, in general, the whole Real Time Location System ecosystem because of the cost-effectiveness of the technology compared to other systems and its low power consumption.
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