By Chris Spencer, CTO, GlobalReach Technology
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When Apple announced that it would be putting MAC randomisation in place in its keynote at WWDC 2020, it started to cause ripples through the Wi-Fi technology community. The feature has now been available to its beta community for a few weeks, with beta 3 now available. Time enough for us to consider the implications and our advice.
I'm playing an industry liaison leadership role between the Wi-Fi industry and Apple, and have been lucky enough to have access to the beta feature. That's given us the opportunity to develop a guide to help our customers and partners to understand the impacts of this new development when it happens.
What is MAC randomisation?
MAC randomisation prevents listeners from using MAC addresses to build a history of device activity. Simply put, a randomised MAC address puts a privacy guard on a device. Any listeners can't use your iPhone, iPad (or Mac's) MAC address to understand your activity and location. By doing this, your device's security and privacy increases.
We don't know when, but we suspect that Apple will universally release this feature close to the release of iOS 14 on all iPhones and iPads. It's expected, but not yet implemented for users of its new operating system Big Sur affecting MacBook (Pro), MacBook Air and MacMini users. When you consider that 70-90% of all phone users have upgraded to an iPhone 6Plus or a more recent device, this will be an issue for most of your Wi-Fi service users.
Random, Just how random?
Apple's implementation of MAC randomisation uses a unique reserved range of MAC addresses, referred to as ‘Locally Administered Address Ranges', comprising four unique ranges reserved for this type of application.
x2-xx-xx-xx-xx-xx
x6-xx-xx-xx-xx-xx
xA-xx-xx-xx-xx-xx
xE-xx-xx-xx-xx-xx
The second digit in the MAC address is the significant digit, and it will always be a 2, 6, A, or E, the rest of the MAC address is entirely random. So, just how random could that be? Well, if MAC addresses are 12 digits long and the second digit is reserved (for one of the four characters I mentioned above), the remaining 11 digits can be one of the valid 16 HEX characters.
16 x 16 x 16 x 16 x 16 x 16 x 16 x 16 x 16 x 16 x 16 or (16^11) = 17,592,186,044,416.
And remember there are 4 of those ranges, 2, 6, A or E so we have (16^11)x4.
So operating systems randomising the MAC address have over seventy trillion (70,368,744,177,664) MAC addresses they could make use of.
So, how random is ultimately down to Apple's random generator, but we can see they have a large enough space to work with?
How's this different?
Shifty space mac os. Currently, iOS anonymises the MAC address during probe requests, but both platforms still use the true hardware MAC address when connecting to the network.
MAC randomisation completely overhauls the process.
- Devices generate a new private Wi-Fi MAC address per Wi-Fi network.
- It regenerates this MAC address every 24 hours.
Windows 10 has had an option to enable MAC randomisation for a few years now, but it is off by default and a user has to navigate to the correct menu and actively enable it.
Android is also testing changing MAC addresses more often, a developer option ‘enhanced MAC randomisation' when enabled generates a new MAC address more frequently. This is currently a developer option and only available on a device used for development, but this shows where the industry is going to add more privacy features.
‘More privacy you say' Sounds good to me. Well yes, but…
Let's say you're a business commuter, using the same three networks most days on your train journey, morning coffee shop, and office. Your behaviour was pretty predictable. This new feature wipes the device's MAC history and every day is a clean sheet.
Industry and user impact
This is a significant change and will have a major impact on Wi-Fi authentication, data collection, and customer experience. The impact is slightly different depending on how your users are authenticated to a network, but all traditional authentication methods are impacted.
Your biggest concern should be the effect on the Wi-Fi user experience. Enterprises and operators typically want smooth, painless Wi-Fi registration and onboarding journeys to match their brand experience, to give them a communication channel and opportunity for customer engagement.
But when users are effectively forgotten every day, many of these methods will see considerable disruption, and potentially customer dissatisfaction.
Your second concern, if you're a business that relies heavily on Wi-Fi analytics, will be the loss of user data. An organisation will be able to track customer behaviour within a 24 hour period, however, when the MAC address is wiped after this window, each device is treated like a new device every day. So returning customers can't be identified or differentiated from first time shoppers, passengers, or guests for example.
If you rely heavily on this data for your marketing database, MAC randomisation will markedly reduce your data.
If you're a venue with a high returning footfall and you want to collect data about your users and customers, our advice is to make the move to Passpoint (Hotspot 2.0) Wi-Fi.
To understand why here's our impact summary across the different user journeys:
Any onboarding journey with data capture
When MAC randomisation is enabled any Wi-Fi registration process that requires form filling – or even simple email capture – will start from scratch every day. The device will appear as new, requiring the user to re-enter details like their email address and to confirm marketing opt-in and T&Cs acceptance (if these exist).
That's a frustrating process and a backward step if you work from the same coffee shop most days, or have a gym membership, are a frequent flyer or other loyal consumer habits.
One-time sign-up
Hmmm. This now becomes not so ‘one time.'
Again, because devices have been forgotten, they are treated like new devices every day, meaning that users will be required to re-register every 24 hours.
Plan or policy-based access
Any plan lasting longer than 24 hours will need the user to login every 24 hours.
SMS, or token-based registration
Any codes sent to a user and not used within a 24-hour window will become obsolete.
Custom authentication journeys
Any journey where the MAC stores a code or other piece of information that verifies the user will be compromised by MAC randomisation.
The solution
If you still want to communicate, engage, and understand your customers, the good news is that there's a way forward using secure Passpoint (Hotspot 2.0). However, Passpoint may not be right for every venue now, and there are other options which, as Wi-Fi authentication experts, we're happy to explain to customers and partners.
Wi-Fi onboarding options following MAC randomisation: GlobalReach Technology
The bottom line is that we see MAC randomisation as an opportunity for retailers, transport providers, cities, enterprises and other venues to leap forward in terms of security and user experience.
The table below shows which operating systems support MAC randomisation:
*1 A developer option called enhanced MAC Randomisation introduces time-based.
*2 Correct at time of publication (macOS 10.16 is still in beta phase).
We suspect (but don't know for sure), that Apple will release the feature to iPhone and iPad users in September and Android in the next year. So there's also time to mitigate the issue and put a better experience in place.
We've analysed and are consulting now on the best technical approach to manage this disruptive new feature.
Talk to your account manager or get in touch today.
Download our MAC Randomisation whitepaper here.
Autodata 3.45 is an amazing Windows tool that can be used to check out the parameters of a car. This tool can be used to repair cars and diagnose any problems that may be present. Diagrams that are needed to represent the complexities of what the car has will also be available so that the user can learn more about what they need to.
The 3.45 version is used a lot by car centers that focus on fixing up cars and revamping them. It provides a lot of details about what modern cars these days need to function properly. There is a sharp intuitive interface available that will help users know more about their car. Learn more about AnyDesk, drop down to ISO River page for the detailed insights.
Features of Autodata 3.45
Intuitive Interface
If you are using a product for the first time, it will definitely be a completely new experience for you if you have not used something similar to it before. You will need a highly interactive UI that can help you get access to whatever you need. That is exactly what Autodata 3.45 offers its users. The intuitive interface that is present on the tool will help even the greatest novices understand what they are doing.
It will ensure that the users of the tool do not get perplexed or overwhelmed trying to understand how to use it. This is one of its greatest strengths and we are sure that you will find this feature very useful, especially if you are a beginner when it comes to all this car information and technology.
Powerful fixing tools
A car can run into many kinds of problems that can prevent it from working or fulfilling its complete potential. Autodata offers incredibly powerful solutions and tools that will assist car repair centres in getting exactly what their clients need to fix their cars. The car centres should be careful in selecting the right ones to ensure that they can fix or repair the cars of clients in the best way possible. They will not have to worry as Autodata has incredibly detailed information regarding whatever they may need.
Petrol injection systems
A car cannot run without fuel as it will not have anything to convert to make the car move. It is imperative that every car owner get their car completely fuelled up before taking it out for a spin. Autodata offers highly effective petrol injection systems that will provide car repair centres with the systems they need to support their customer's cars. This is a testament to the quality and standard of what comes from Autodata and why it is such a highly-respected product in the automobile industry. These petrol injection systems are highly effective and will pump your car up with all the energy that it needs.
Fixing air conditioners
Having a proper air-conditioner is something that we may take for granted, especially if we have never had one malfunction or stop working. It can be unbearable to sit in a car that does not have an air-conditioner that is working. Autodata offers proper information to help car repair centers help their clients fix their air conditioners if they are not working. Providing that cool air that moves through the dusty air inside a car will definitely put a smile on your customer's face. You also won't have to worry about how to handle this issue in case it happens as you will now have Autodata to help you out.
Belt installation adjustment
The seatbelt in a car is absolutely paramount to the safety of those inside the car. We often take our seatbelts lightly but they are extremely important to maintaining our safety in case something goes awry with the car(accident, etc). Autodata offers a fantastic automatic belt installation option that will make it much easier for users to get their belts working in their cars, in case they were not before. Car repair centres will be able to help their customers with this so that they do not have to worry about their cars not having the needed safety precaution measure installed in case of dangerous situations.
Advanced information system
There are so many things that can go wrong with a car that can prevent it from properly working at its full potential. There are tons of pages dedicated to content regarding cars and their parts in the guide that is provided by Autodata. Autodata offers comprehensive detailed information that covers a variety of issues that could take place inside a car.
These could include issues with air-conditioners, seatbelts, and motors. Autodata also provides car repair centres with intricate diagrams that detail how to resolve these issues. You don't have to worry about the problems that may plague your car when you have such a wonderful system to help you out.
Steps to Download Autodata 3.45
The user has to carefully follow the steps given below so that they can successfully download Autodata 3.45 and use it:
- The user has to select the download link that is provided on the Autodata website.
- They have to download the software to their Windows device directly.
- All of the 3 parts of Autodata 3.45 should be selected by the user and then extracted. The extracted parts should then be placed in a file.
- The user should follow the instructions that are displayed to them and install Autodata 3.45 properly.
- Once Autodata 3.45 has been installed successfully, the user can try it out for themselves and see if they like it or not.
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We had a ball preparing this article for you. It was so great knowing that such a wonderful piece of software exists to help users with their car repairs and problems. Car repair centres can rest assured knowing that Autodata is there to help them.
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We recommend that you try this product out and test it in case you have not done so before. If you end up liking it, you can recommend it to your friends and family so they can enjoy using it as well. Please feel free to reach out to us below in case you have any queries about the content that we have delivered to you.
