By Matthew S. Gast
ISBN-10: 1491904577
ISBN-13: 9781491904572
High-precision place info is more and more priceless for cellular software builders, because it permits units to have interaction with the area round them. This functional publication indicates you ways to accomplish arm's achieve accuracy with iBeacons, basic transmitters that allow your purposes to react to within reach atmosphere after which carry well timed, correct information—especially interior, the place GPS and mobilephone carrier are erroneous. even if you are allowing a map, giving clients instructions, making a video game, recommending purchases, letting clients sign in, or growing an immersive event, you will find out how iBeacons offer special situation details, empowering your purposes to interact and have interaction with clients close by.
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Extra info for Building Applications with iBeacon: Proximity and Location Services with Bluetooth Low Energy
Sample text
Transmitter switch By default, a newly configured iBeacon will be off. If you switch on the configuration, the iOS device will act as a beacon for the current configuration only and will switch from any active configuration. Not surprisingly, the controls on the application correspond with the mutable fields in the iBeacon protocol, plus a switch to trigger transmission. With a simple protocol, a one-screen configuration is easy to achieve. RadBeacon The Radius Networks RadBeacon is a USB-powered iBeacon that is configured over Bluetooth.
UUID plus major number This option narrows the region by requiring a match of both the UUID and major numbers. Like the UUID-only option, it is likely to match several iBeacons, most likely installed at one particular location. info | 43 UUID plus major and minor numbers The most specific of the three options, this region type requires a match between the UUID, major number, and minor number. In most cases, this option will match only one specific iBeacon. Pseudocode for setting up iBeacon monitoring is simple: 1.
Not all beacon products allow this field to be set. Major (2 bytes) and Minor (2 byte) numbers These fields, each two bytes in length, contain the major or minor number that will be contained within the iBeacon’s broadcast. Measured power (1 byte) Implicit within the iBeacon protocol is the idea of ranging (identifying the distance a device is from a beacon, as discussed in “Ranging” on page 48). There may be slight variations in transmitter power, so an iBeacon is calibrated with a reference client.