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Importantly, beacons do not generally accept connections from other devices, meaning that the beacon itself cannot record what devices are in its vicinity. In many cases, the simplicity of the beacon frame means that an app (for example Google Chrome) is required in order to interpret the beacon's signal.
UID (similar to Apple's UUID): a 16 digit string of characters, which can identify the individual beacon. This UID can activate an installed Mobile App. TLM: sensor and administrative data from the beacon itself is communicated through telemetry. Currently, examples include the beacon's battery level and its temperature. Advantages:
802.11 Beacon frame. A beacon frame is a type of management frame in IEEE 802.11 WLANs. It contains information about the network. Beacon frames are transmitted periodically; they serve to announce the presence of a wireless LAN and to provide a timing signal to synchronise communications with the devices using the network (the members of a service set).
Normally it is broadcast in the clear by stations in beacon packets to announce the presence of a network and seen by users as a wireless network name. Unlike basic service set identifiers, SSIDs are usually customizable. [10] These SSIDs can be zero to 32 octets long, [11] and are, for convenience, usually in a natural language, such as English.
EtherType is a two-octet field in an Ethernet frame. It is used to indicate which protocol is encapsulated in the payload of the frame and is used at the receiving end by the data link layer to determine how the payload is processed. The same field is also used to indicate the size of some Ethernet frames.
Web Beacons. Web beacons are small pieces of code placed on Web pages, videos, and in emails that can communicate information about your browser and device to a server. Beacons can be used, among other things, to count the users who visit a Web page or read an email, or to deliver a cookie to the browser of a user viewing a Web page or email.
Following a beacon frame that includes a DTIM, the access point will release the buffered broadcast and multicast data, if any exists. Since beacon frames are sent using the mandatory 802.11 algorithm for carrier-sense multiple access with collision avoidance (CSMA/CA), the access point must wait if a client device is sending a frame when the ...
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