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2. List of Bluetooth protocols - Wikipedia

   en.wikipedia.org/wiki/List_of_Bluetooth_protocols

   Radio frequency communication (RFCOMM) The Bluetooth protocol RFCOMM is a simple set of transport protocols, made on top of the L2CAP protocol, providing emulated RS-232 serial ports (up to sixty simultaneous connections to a Bluetooth device at a time). The protocol is based on the ETSI standard TS 07.10. RFCOMM is sometimes called serial port ...

3. Bluetooth Low Energy beacon - Wikipedia

   en.wikipedia.org/wiki/Bluetooth_low_energy_beacon

   Bluetooth 2.1 improved device pairing speed and security. Bluetooth 3.0 again improved transfer speed up to 24 Mbit/s. In 2010 Bluetooth 4.0 (Low Energy) was released with its main focus being reduced power consumption. Before Bluetooth 4.0 the majority of connections using Bluetooth were two way, both devices listen and talk to each other.

4. Frequency-hopping spread spectrum - Wikipedia

   en.wikipedia.org/wiki/Frequency-hopping_spread...

   Frequency-hopping spread spectrum ( FHSS) is a method of transmitting radio signals by rapidly changing the carrier frequency among many frequencies occupying a large spectral band. The changes are controlled by a code known to both transmitter and receiver. FHSS is used to avoid interference, to prevent eavesdropping, and to enable code ...

5. Proximity marketing - Wikipedia

   en.wikipedia.org/wiki/Proximity_marketing

   Proximity marketing. Proximity marketing is the localized wireless distribution of advertising content associated with a particular place. Transmissions can be received by individuals in that location who wish to receive them and have the necessary equipment to do so. Distribution may be via a traditional localized broadcast, or more commonly ...

6. iBeacon - Wikipedia

   en.wikipedia.org/wiki/IBeacon

   iBeacon is a protocol developed by Apple and introduced at the Apple Worldwide Developers Conference in 2013. [1] Various vendors have since made iBeacon-compatible hardware transmitters – typically called beacons – a class of Bluetooth Low Energy (BLE) devices that broadcast their identifier to nearby portable electronic devices.

7. Bluetooth - Wikipedia

   en.wikipedia.org/wiki/Bluetooth

   Bluetooth is a short-range wireless technology standard that is used for exchanging data between fixed and mobile devices over short distances and building personal area networks (PANs). In the most widely used mode, transmission power is limited to 2.5 milliwatts, giving it a very short range of up to 10 metres (33 ft).