i want to know some details about iBeacons. Couple of days back i created a sample project where i turned my iOS Device into an iBeacon and i tracked down that iBeacon with another device, i am also getting the proximity distance between my Device and the beacon.
So my question is Is it possible to post some advertisements from my device which acting as iBeacon?
How to configure that?
All i wanted to know is how the iBeacon Configuration done to send the data?
Some one please help me out
thankYou
An iBeacon "advertisement" is just a constant transmission of a four part identifier that signifies a unique device. It only contains four fields:
proximityUUID (a 16 byte UUID usually expressed in the form 00000000-0000-0000-0000-000000000000)
major (a number from 0 to 65535)
minor (a number from 0 to 65535)
power (a number from 127 to -128)
That's it. You can't make an iBeacon send any more data than that. It doesn't matter if the device acting as an iBeacon is your phone, an iPad, a Mac computer, or a small battery-powered unit.
If you want to tie other data to an iBeacon, you have to do it through another channel, by some kind of lookup that matches the data up with the identifiers above. You can do this with a static lookup table in your app, a web service, or a CoreBluetooth communication channel. But you have to code that yourself.
Related
I have a Bluetooth device, and I try to execute a function when my application is near the device.
I read on an iBeacon technology, but I did not really understand if the iBeacon could be used on all Bluetooth devices as long as you have your UUID, or you need the Bluetooth device have a service that sends a special UUID for iBeacon?
If you have access to the firmware on your Bluetooth device, it is generally simple to set up iBeacon advertising. You must enable the Bluetooth controller to emit a manufacturer advertisement with a specific 22 byte payload. The details of how you do this is device-dpecific.
That payload contains three identifiers which you may choose, the Proximity UUID is a 16 byte sequence, the major is a two byte sequence and the minor is also a two byte sequence.
You can see the layout of this payload in my answer here.
You can then use the CoreLocation API on iOS and the Android Beacon Library on Android devices to detect the iBeacon advertisement with the same identifiers and make your app react.
I would like to develop app which detects a lot of beacon device withoud knowing uuid.
However I cannot find way to do this in internet.
I have to define uuid in code.
So is there way to detect iBeacon without knowing uuid?
I know CoreLocation requires you to know the UUID of the beacon you are CBCentralManager, which handles all of the bluetooth spectrum. It has methods for scanning for bluetooth devices. I don't have an iBeacon handy at the moment to test and see if it picks them up, but it is probably worth a try.
The nomenclature used is quite important here. If you want to detect 'iBeacon', then you need to at least know the UUID of the device or devices you're looking for. That's because, in the iBeacon standard, the ID is the only piece of information included in the advertising packet. iBeacon lets you do two things: monitoring and ranging (detecting whether there is an iBeacon in range, and detecting how close the iBeacon is), and both require you to know the UUID.
If you just want to look for beacons, without including the iBeacon properties and features, you can use Core Bluetooth to do that. SDKs of particular beacon vendors base their beacon maintenance features (firmware updates, settings changing) on that. This method is also used by vendors that use their own protocols alongside Apple's iBeacon. We do that at Estimote with Estimote Stickers, and AFAIK Gimbal does this as well.
Cheers.
I have bought 5 BLEs from sensor tag, I Downloaded some iBeacon detection code.
But I do not know UUID of the 5 BLEs. Do I Need to put the UUID in my iBeacon detection code?
How Can I get the bluetooth device list using iBeacon code?
While you can use CoreBluetooth to do an LE scan and see all nearby iBeacons, the info you get back about each iBeacon is not very useful -- iOS blocks you from being able to read the iBeacon identifiers, including the ProximityUUID. See My blog post about this here.
So the bottom line is that while you can see unknown Proximity UUID iBeacon devices with iOS, you cannot even be sure the devices you see are iBeacons at all.
Android and OSX Mavericks do not have this restriction, so if you have access to one of those devices, try my company's iBeacon Locate or ScanBeacon products, which will read your identifiers for you.
Is impossible, at lest no way to get this list via public API, you must know the UUIDs before ranging
I am going to start a project code for iBeacon with iOS 7 and bluetooth 4.0.
http://www.appcoda.com/ios7-programming-ibeacons-tutorial/
Readied above link, i have coded it and tested . it is working fine .
Created two apps. One for transmit beacon and another for track beacon.
How can send small data to track beacon from transmit beacon. Small data is a ID of room.
Is possible send small data to track from transmit?
You cannot send any other data from a device transmitting as a beacon to another device via the iBeacons protocol. However, if only want to know a room ID, then you should set this as either the major or minor value of the beacon (or a combination of those two values).
As an example, a large retailer might set:
UUID: A single UUID for the retailer
Major ID: Identifies the specific store that a beacon is located in
Minor ID: Identifies the department that the beacon is in
If you wish to transmit more substantial data between two iOS devices, you'll probably want to look at something like Apple's Multipeer Connectivity framework.
https://github.com/DavidSahakyan/LGBluetooth
here is a framework which will help you to work bluetooth 4
I know CFUUID is generated from MAC address and a few other stuff. So is there anyways to get the MAC address back from CFUUID?
We have a few bluetooth devices and all the user knows is the last 3 parts of the MAC address which is written on the device. So we wanna give the user and option to select the right device. On the iOS side, looks like all we have the the CFUUID. So is there's a way to convert the UUID back to mac address?
Or even better would be if there's a way to get a peripheral's MAC address directly instead of UUID, but doesn't seem like that's possible
Thanks
Well, as you might have learnt from the comments to your question, the answer is clearly: NO. It is not possible (practically) to get the seeds that generated a particular UUID. Provided that in fact the algorithm that generated your UUID did used the MAC Address of your device to generate it, and I guess you cannot guarantee that it is the case for the UUID generator you use, unless you have access to the UUID Generator code or algorithm (UUID Version 1 probably?) and it is not a opaque operation to you (Immediately defeating the very purpose of the uuid generation algorithm).
While you clearly are onto something when you say that the generation of a UUID might use the MAC address of the device, other components like timestamps, hashing, UDID (iOS Devices) and so on. The fact is that the MAC Address, could be just one of many factors used to generate the UUID so if you were to spend a lot of computing power into trying to deconstruct it out of a big sample of UUIDs generated by the same system under the same conditions; We will probably be talking about a quantum computer wasting computing power trying to explore as many combinations as particles in the observable universe so you get a MAC address that you may as well get as a characteristic from a Bluetooth peripheral if you like, and incidentally defeating the purpose of having a UUID in the first place, once more.
On the other hand, further to what somebody commented on your question: the reason you find UUIDs so boring, building on top of the previous paragraph idea, is so you can avoid collisions: Generating duplicates not just coming from the ones generated by your computer but from all the other ones generated by every device out there every moment of the day (to authenticate requests, create string index keys in a database, or identifying services and characteristics) so your cool service or characteristic named:
AAAAAAAA-BBBB-CCCC-DDDD-EEEEFFFF6666
does not get confused with another cool foo service or characteristic with the same UUID.
In general, for more information check wikipedia or just the Core Bluetooth Programming Guide, form the developer portal. It is still under NDA so you have to be a registered iOS Developer with active developer program credentials to read it.
I was looking for a way to deploy platform-independent, static configurations of BLE devices. I was getting discouraged (Apple's UUIDs are +/- meaningless, and the MAC/BDADDR which can be obtained on most/all other platforms is not accessible from CoreBluetooth). Fortunately, I noticed that the "Device Information Service" profile (0x180A) contains a "System ID" attribute (0x2A23) which encodes the device's unique MAC/BDADDR address. I don't know if it is mandatory for a BLE device to expose this service, however.
there is a way to get mac address for ios device. but only works on ios8 and later. no private api .https://github.com/Baoge2012/MacAddressLibDemo