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Eddystone was a Bluetooth Low Energy beacon profile released by Google in July 2015. In December 2018 Google stopped delivering both Eddystone and Physical Web beacon notifications. The Apache 2.0-licensed, cross-platform, and versioned profile contained several frame types, including Eddystone-UID, Eddystone-URL, and Eddystone-TLM. [1]
A beacon frame consists of an 802.11 MAC header, a body and a frame check sequence (FCS). [1] Some of the fields in the body are listed below. Timestamp After receiving the beacon frame all the stations change their local clocks to this time. This helps with synchronization. Beacon interval This is the time interval between beacon transmissions.
Bluetooth beacons use Bluetooth Low Energy proximity sensing to transmit a universally unique identifier [1] picked up by a compatible app or operating system. The identifier and several bytes sent with it can be used to determine the device's physical location, [ 2 ] track customers, or trigger a location-based action on the device such as a ...
It is set to 1 in a non-QoS data frame transmitted by a non-QoS WLAN station to indicate the frame being transmitted is using Strictly-Ordered service class (this use is obsolete and will be removed from the future 802.11 Standard).
Beacons periodically transmit small amounts of data within a range of approximately 70 meters, and are often used for indoor location technology. [1] Compared to devices based on Global Positioning System (GPS), beacons provide more accurate location information and can be used for indoor location. Various types of beacons exist, which can be ...
Web beacons embedded in emails have greater privacy implications than beacons embedded in web pages. Through the use of an embedded beacon, the sender of an email – or even a third party – can record the same sort of information as an advertiser on a website, namely the time that the email was read, the IP address of the computer that was used to read the email (or the IP address of the ...
22.1 kHz 39°33′31″N 74°22′14″W / 39.558495°N 74.370570°W / 39.558495; -74. shut down 1948, 820-foot (250 m) tower demolished 1955, transmitter building remains
An aerodrome beacon, airport beacon, rotating beacon or aeronautical beacon is a beacon installed at an airport or aerodrome to indicate its location to aircraft pilots at night. An aerodrome beacon is mounted on top of a towering structure, often a control tower , above other buildings of the airport.