Udemy Class Review: Raspberry Pi Bootcamp


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The Raspberry Pi began life as a simple teaching instrument designed to make it easier for young minds to learn to program. Today that’s still the primary purpose of Raspberry Pi devices, but the product has also taken on a new life as a hobbyist mini computer. In these two capacities, it has been used to create numerous other devices from TV boxes to robots.

Although the Raspberry Pi is relatively easy to program by design, learning to set up the Raspberry PiSEEAMAZON_ET_135 See Amazon ET commerce and create devices with it remains a challenge. That’s where Udemy’s Raspberry Pi Bootcamp: For the Beginner course comes in. This course aims to teach you everything you need to know to enable you to develop your own Raspberry Pi devices.

Course Review

Before diving into the course itself, I should mention that this course predominantly works with the Raspberry Pi 3. Due to the similarities between the various Raspberry Pi devices, however, most if not all of the lessons should be applicable to any model of the Raspberry Pi.

After giving you a brief overview of some of the many things you can learn to do with the Raspberry Pi, the lecturer dives straight into teaching you how to install Raspbian on an SD card for use with a Raspberry Pi. Raspbian is a Linux distribution that has been specifically configured for use on the Raspberry Pi. This is followed by instructions on how to connect the Raspberry Pi to a keyboard, mouse, and display, as well as a step by step guide on setting up the Raspbian software.

If you simply wish to use the Rasberry Pi as a computer for web browsing, multimedia consumption, and light gaming, then you can technically stop the course here. Later in the course there is a section dedicated to setting up the Raspberry Pi as a game system that you may also be interested in, but other than that there is little reason for you to continue the course.

If you plan to use the Raspberry Pi for other purposes beyond just as a media player and gaming device, however, then there is still a lot of useful information in the following lectures. Next up in the course is a lesson over the GPIO pins, which are used to connect various other devices.

Using the GPIO pins and a breadboard, the lecturer instructs you on how to use the GPIO to connect a simple LED. From here the lecturer teaches you how to control the LED using the GPIO pins, and he provides you with downloadable code files from GitHub to make this easier.

The following lectures dive into more detail with dedicated lessons on how to set up an Apache web server, control circuits connected to the Raspberry Pi from a web interface, and creating a Google Home clone.

Conclusion

Throughout these lectures, the information provided is delivered in a clear and easy to understand manner. I didn’t have a Raspberry Pi device on hand to follow along with the instructions given in the course, but using this material as a guide I’m quite certain that I would be able to with ease.

Realistically, this course just scratches the surface of what’s possible with the Raspberry Pi, but it feels well thought out. It focuses on hitting important topics and simple lessons that keep the course easy for everyone to follow. At the same time, after taking the course you will have a solid base for which to build upon as you continue to learn and grow your knowledge of using the Raspberry Pi. If you’ve been wanting to learn how to use a Raspberry Pi, then I’d highly recommend this course. Currently, you can get it from Udemy for $19.99.

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Ring Provided a Map of Its Customers to Police


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Ring was one of the first companies to make video doorbells and has since expanded to other home security products. As part of its aggressive strategy after the Amazon acquisition, Ring has partnered with hundreds of police departments across the US. This program has proven controversial, and it becomes more so with each new report. According to a new leak, Ring’s pitch to police sometimes includes a map of active Ring customers, something it previously said it would not do. 

Ring’s current strategy seems to be signing up as many law enforcement organizations as possible to be partners. The agreements signed with police call for departments to promote Ring products, in some cases creating new positions specifically to coordinate with the company and residents. Buy getting residents to sign up for the Ring Neighbors app, police earn credit toward free cameras they can distribute to the community. The benefit to police is access to the Ring Neighbors portal. There, police can request access to video clips from doorbells around their jurisdiction. 

Ring has long maintained that it protects the privacy of users in the Neighbors portal. The newly leaked emails and documents certainly call that into question. The emails relate to Ring’s deal with Georgia’s Gwinnett County Police Department. A Ring representative shared two maps with the police, both showing active Ring camera locations inside Gwinnett County. One map was zoomed out, showing just an unresolved blob of red dots, but the other was more zoomed in, showing more accurately where the cameras were. 

The maps of active Ring cameras provided by Ring to Gwinnett County Police.

In the months after the maps went out, Ring and Gwinnett County went back and forth to hammer out the deal. Ring eventually provided about $15,000 worth of cameras to get police started. Like other leaked “Memorandums of Understanding,” the agreement with Gwinnett County required the police to spend time promoting Ring’s products and services. In some cases, police even provide Ring with access to 911 call data in order to post updates in the Neighbors app. The company believes this helps encourage users to engage with police and provide video footage when asked. 

On some level, it’s not outlandish to help people voluntarily provide video footage to police. Police have long done the same thing simply by canvassing areas around crime scenes for security cameras.SEEAMAZON_ET_135 See Amazon ET commerce The issue cited by privacy advocates is how easy Ring makes it for police to request mountains of data they may not need. Ring itself also has a sordid history. It’s been less than a year since Ring came under fire for giving employees full access to customer video. It’s hard to trust Ring to run a surveillance operation with police in an ethical way with no oversight.

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DMVs Are Selling Data to Private Investigators, Marketing Firms


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A new report shows that the DMVs (Department of Motor Vehicles) in many states are taking full advantage of the modern information economy, and they’re making bank doing it. The data we’re required to hand over by law in order to qualify for a driver’s license is being used for very different purposes than you likely intend. Specifically, it’s being sold to private investigators.

That’s the result of a major Motherboard investigation into how DMVs are using the personal data of the citizens they supposedly serve. Like a lot of companies these days, DMVs sell data. Insurance companies buy some of the data, but much of it is being sold to other sources, like private investigators. Such data is apparently popular for surveilling cheating spouses, and the same private investigators that advertise such services are apparently major purchasers.

DMV-Data-Sales

Data and graph by Vice

Multiple DMVs stressed that they don’t sell social security numbers or photographs, as if this represents some kind of meaningful protection. Some contracts with these investigators are for bulk searches; some are targeted searches. The cost per search is as low as $0.01, and these contracts can run for months at a time.

“The selling of personally identifying information to third parties is broadly a privacy issue for all and specifically a safety issue for survivors of abuse, including domestic violence, sexual assault, stalking, and trafficking,” Erica Olsen, director of Safety Net at the National Network to End Domestic Violence, told Motherboard in an email. “For survivors, their safety may depend on their ability to keep this type of information private.”

All of this is perfectly legal, thanks to the Driver’s Privacy Protection Act, which was passed in 1994. While that law was specifically intended to increase the protections surrounding DMV databases, it included specific carve-outs for private investigators. Granted, the text of the law states that private investigators are only allowed to access these records for a “permitted” DPPA use, but apparently that’s not an issue.

The exact data sold varies from state to state, but it typically includes at least a name and address. Other data, including zip codes, phone numbers, date of birth, and email address are also included depending on the state. The DMV also sells data to credit reporting companies like Experian and LexisNexis. Delaware has arrangements with more than 300 entities. Wisconsin has more than 3,000.

Why are DMVs going down this road? Money. Delaware brought in $384,000 for itself between 2015 and 2019, while the Wisconsin DMV brought in $17M in 2018 alone, up from just $1.1M in 2015. In Florida, the DMV made an eye-popping $77M just in 2017. The contracts with various DMVs explicitly state that the purpose of these agreements is to generate revenue, and the states are aware that some of the information they sell to third-parties is abused. Whether their controls for catching and locking abusers out of these systems are adequate are an entirely different question.

It is long past time for the United States to pass better privacy laws. There is absolutely no justification for the current free-for-all. There is no standard for how data-sharing agreements should be overseen. Local investigations have found that Florida is selling data to marketing firms, not just private investigators, and some citizens have been hit with an onslaught of robocalls and spam as a result. Florida sells data to Acxiom, one of the largest data brokers in America. Acxiom is not a PI firm, just in case you were wondering. Citizens who have been slammed with robocalls, direct mail, and even door-to-door salesman showing up at their homes as a result of this relentless data-selling have no recourse. There’s no one to complain to, there’s no way to get taken off the lists, and there’s no way to prevent their own data from being endlessly sold. Robocalls have become such an epidemic, people now actively avoid answering the phone unless they know the number of the person calling them.

People often ask questions like “Why should I care if someone sells my data?” but don’t connect the question to the fact that they get 15 robocalls a day. Sexual assault and domestic violence survivors may not have those kind of options. But privacy shouldn’t be a right that depends on whether someone is threatening to harm you physically. Privacy should be the default state, particularly when it concerns the government organizations virtually all of us are required to interface with.

If you ever drive in the United States, you must have a driver’s license. Just as with credit reporting agencies, none of us get any choice in the manner. The legal system allows states and the federal government to create effectively mandatory standards because it recognizes that doing so helps ensure the safety of everyone. But if the legal system is going to require that citizens submit data to the federal and/or state government for licensing and registration purposes, it ought to simultaneously require that said data is kept private and only accessed under strictly controlled conditions. The idea that people “opt in” to these practices simply by existing has been stretched past the breaking point. It’s time for a change.

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Udemy Class Review: Ubuntu for Beginners


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The operating system market today is dominated by Microsoft and various versions of Windows to such an extent that some people still don’t even know there are alternatives. One of the most popular is Ubuntu, a free OS based on Linux. If you’ve never used Ubuntu, you will likely encounter difficulties performing relatively simple tasks such as installing programs. Not to fear though: The Ubuntu For Beginners course from Udemy aims to teach you exactly what you need to know to get up and running on Ubuntu.

Course Overview

Starting up this lecture series you’ll want to skip straight to section 2. The first section is aptly titled “Course Overview” and will list off the topics that will be covered in the course, but there aren’t any real lessons here. Section 2 explains what Ubuntu is and some of the pros and cons of using it as opposed to other operating systems. An important distinction of Ubuntu is there are versions with long-term support with regular software updates, which is uncommon in the Linux world.

Next, the lecturer will instruct you on how to obtain a copy of Ubuntu and install it. This really isn’t all that different from installing Windows from a flash drive, but for true beginners, this could prove useful. This is followed with some information about using a virtual machine, which will be helpful for students unfamiliar with that software.

About a quarter of the way through the course you will start to be taught how to use the OS itself. First up is installing applications using the terminal, followed by the commands to uninstall applications. The lecturer then teaches you how to do these tasks using the graphical interface, and then he dives into additional lessons involving the terminal interface such as managing accounts.

Large portions of the next few sections are spent working closely with the terminal, so get used to this above image. The lecturer will teach you how to perform numerous tasks inside of the terminal and focuses on its use for the remainder of the course. Although this is beneficial and likely where new Ubuntu users could use the most instruction, there is a notable lack of information on how to use the graphical user interface.

Conclusion

Evaluating the course as a course is somewhat difficult. The course is well organized and the individual lessons feel well-paced and informative. The high volume of tasks you will learn to perform from inside Ubuntu would undoubtedly prove useful if you plan to use the operating system on a regular basis. But the course as a whole feels like a lot to absorb in just one sitting and far more than you need to just use the OS on a basic level.

I can’t really fault the course for providing too much information, though, and if you want to learn how to use Ubuntu I would recommend it, but I’d also suggest taking the course slowly over an extended period. Students will likely benefit the most from taking just the first half of the course and then taking time to use the operating system and familiarize yourself with the software. The remaining lessons could then be taken as needed, which I feel will ultimately make the course easier and more effective for most students. If you are interested in trying this course, you can get it now from Udemy for $18.99.

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The Hong Kong Internet Service Providers Association warns that restricting online access would be ruinous for the region – gpgmail


After Hong Kong’s leader suggested she may invoke emergency powers that could potentially include limiting Internet access, one of city’s biggest industry groups warned that “any such restrictions, however slight originally, would start the end of the open Internet of Hong Kong.”

While talking to reporters on Tuesday, Hong Kong Chief Executive Carrie Lam suggested the government may use the Emergency Regulations Ordinance in response to ongoing anti-government demonstrations. The law, which has not been used in more than half a century, would give the government a sweeping array of powers, including the ability to restrict or censor publications and communications. In contrast to China’s “Great Firewall” and routine government censorship of internet services, Hong Kong’s internet is currently open and mostly unrestricted, with the exception of laws to prevent online crime, copyright infringements and the spread of obscene material like child pornography.

In an “urgent statement” addressed to Hong Kong’s Executive Council, the Hong Kong Internet Service Providers Association (HKISPA) said that because of technology like VPNs, the cloud and cryptographies, the only way to “effectively and meaningfully block any services” would entail putting all of Hong Kong’s internet behind a large-scale surveillance firewall. The association added that this would have huge economic and social consequences and deter international organizations from doing business in Hong Kong.

Furthermore, restricting the internet in Hong Kong would also have implications in the rest of the region, including in mainland China, the HKISPA added. There are currently 18 international cable systems that land, or will land, in Hong Kong, making it a major telecommunications hub. Blocking one application means users will move onto another application, creating a cascading effect that will continue until all of Hong Kong is behind a firewall, the association warned.

In its statement, the HKISPA wrote that “the lifeline of Hong Kong’s Internet industry relies in large part on the open network,” adding “Hong Kong is the largest core node of Asia’s optical fiber network and hosts the biggest Internet exchange in the region, and it is now home to 100+ data centers operated by local and international companies, and it transits 80%+ of traffic for mainland China.”

“All these successes rely on the openness of Hong Kong’s network,” the HKISPA continued. “Such restrictions imposed by executive orders would completely ruin the uniqueness and value of Hong Kong as a telecommunications hub, a pillar of success as an international financial centre.”

The HKISPA urged the government to consult the industry and “society at large” before placing any restrictions in place. “The HKISPA strongly opposes selective blocking of Internet Services without consensus of the community,” it said.

If internet access is restricted in Hong Kong, a major financial hub, it would be a major hit to global internet freedom, which Freedom House says has been declining over the last eight consecutive years as more countries “mov[e] toward digital authoritarianism by embracing the Chinese model of extensive censorship and automated surveillance systems.” Many governments, including those of Tanzania and Uganda, have enacted new restrictions or laws in an attempt to curb political dissent, modeling their censorship measures on countries like China and Russia.

 


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Udemy Class Review: Basics of Embedded C Programming


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In today’s modern world, it’s nearly impossible to go through an entire day without interacting with a device with an embedded controller at some point. These low-power devices are in the vast majority of electronics, including vehicles, vending machines, kitchen appliances, and just about everything in between.

A large number of these devices were also programmed using a language known as Embedded C. The Basics of Embedded C Programming course on Udemy we will be looking at today aims to teach you the basics of this language so that you can learn to program your own embedded circuits.

Course Overview

Getting into the beginning of the course, you’ll want to push the volume up on your system higher than normal. The lecturer is fairly soft-spoken. This isn’t helped by occasional static in the audio recording and a clear mic drop at one point. I think it would have been beneficial if the lecturer had gone back to fix these issues, but for some reason, he opted not to.

After giving an introduction into the types of programming code used on embedded devices, the lecturer dives into the hardware aspect of things. This is beneficial as it gives you an idea of what you should consider when choosing from multiple embedded controllers. Included in this are important considerations like the size of the available memory and the ease with which devices can be maintained.

Another key consideration raised is program portability, which is crucial as you may later want to move or adapt a piece of software from one type of device to work on another. After this, the lecturer next returns to a discussion on the different types of programming languages and he explains the pros and cons of each, which ultimately leads to why learning the embedded C programming language is beneficial.

At this point, roughly 15 minutes into the short two-hour course, the lecturer begins to really teach you to understand the code and provides examples along the way. Included in this is a discussion on data types in Embedded C and lectures dedicated to specific operations, such as asthmatic and a 30-minute section on Bitwise.

The last portion of the course walks you through how to write a simple program using embedded C to make LED lights blink. After writing the code, the lecturer shows you how to design the hardware configuration using a software utility, after which he teaches you how to actually load the software onto a microcontroller.

Conclusion

Overall I feel this class was highly informative, but it’s far from perfect. I struggled throughout the entire course to understand the lecturer. Due to issues with the audio, I found myself having to read the slides presented in the lecture carefully in order to understand the course. This is far from an ideal situation, as some parts of the course don’t have accompanying text to help you understand. The explanations the lecturer gives are also quite helpful, but I had to listen to parts multiple times in order to fully comprehend what was said. This can get a little tiresome after a while, and you will need to be patient and slowly go through this course if you really want to learn from it.

I would still recommend this course to anyone looking to learn the basics of Embedded C, as I feel I’ve learned more about the language from this course and that I would learn considerably more by going over the course again. Right now you can get it for $9.99, but it typically costs $19.99.

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The Untold Story Behind the World’s First Major Internet Attack: The Morris Worm


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Our connected world comes with countless risks. Viruses, worms, spyware, ransomware, backdoors, trojans: The language of cybersecurity is relatively new, but we have quickly become fluent. The misuse of technology has become the darkest danger of the digital age. Bad actors, emboldened by our inability to properly secure crucial systems and networks, are launching increasingly sophisticated attacks. No system is safe.

But in the beginning — the very, very beginning — computers inspired utopian visions of a better future, a world in which we were all digitally connected to one another and living in harmony.

Then came the Morris Worm.

At Xerox’s Palo Alto Research Center, programmers were developing high-speed networks and the means by which computers could communicate with one another. This was the birth of the internet, and programmers’ ambitions pushed the limits of the imagination. But no one in Palo Alto could’ve imagined how bringing computers together would allow one bad actor to tear the system apart.

In this premiere episode of Kernel Panic, ExtremeTech’s sibling sites Mashable and PCMag take viewers back to the moment everything changed: 1988, when groundbreaking malware known as the Morris Worm spread across global networks, causing significant outages and worldwide panic. The Morris Worm opened the world’s eyes to unforeseen vulnerabilities, planting the seeds of public mistrust that have steadily grown for decades and, today, are flourishing.




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Ookla Ranks Airports by Wi-Fi Speed


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You always want good data speeds, but there are few places a good data connection is more important than at the airport. You might want to download some music or send some emails before going offline, and airport Wi-Fi can be congested and slow. However, things are improving, and some airports are faster than you might expect. Ookla, the company behind Speedtest.net, has checked US and Canadian airports to figure out which ones offer the best Wi-Fi speeds. 

(Editors’ Note: Ookla is owned by j2 Global, the parent company of ExtremeTech’s publisher, Ziff Davis.)

You probably always have an LTE-equipped phone in your pocket, but airports are often a perfect storm of poor wireless service. They’re large, sturdy buildings positioned away from urban sprawl, and the crowds put strain on cell towers. Plus, you might not want to burn through mobile data to cache all that music and video you forgot to save before heading to the airport. Ookla tested the 51 largest airports in the US and Canada, and Honolulu’s Daniel K. Inouye International Airport ranked as the fastest. Actually, it wasn’t even close. 

If you’re passing through the Honolulu airport, you’ll enjoy Wi-Fi speeds that hover around 145 Mbps down and about 163 Mbps up. The runner up was Chicago Midway, barely crossing 100 Mbps, making it 37.5 percent slower than the winning Daniel K. Inouye International Airport. Coming in at number three is Sea-Tac at 98 Mbps down and 138 Mbps up. That’s still a respectable showing, but Ookla reports that Sea-Tac’s speeds have fallen 4.4 percent since last year. 

Most of the airports tested have enough speed to let you get things done on the internet, but the bottom handful of networks clock in under 10 Mbps. That can be painfully slow, depending on what you need to do. The lowest-ranked Louis Armstrong New Orleans International Airport offered barely 1 Mbps up and down. 

When speeds are bad on the official airport network, travelers might turn to one of the spendy paid hotspots. Ookla also checked for these faster networks. Interestingly, the official airport Wi-Fi is faster in most places, but there are some middle and lower-tier airports with fast secondary networks. For example, The “united-club” SSID in Chicago O’Hare International Airport is 93 percent faster than the public network. In the Salt Lake City Airport, “DeltaSkyClub” is nearly 700 percent faster than the second-to-last public network. Although, it’s still just 18 Mbps. 

You can check out the full analysis on the Speedtest blog. You might want to check it for any upcoming trips so you can decide whether it’s worth using the airport Wi-Fi, your LTE service, or getting on one of those premium hotspots. 

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Satellite internet startup Astranis books first commercial launch on SpaceX Falcon 9 – gpgmail


Y Combinator-backed startup Astranis is now set to launch its first commercial telecommunication satellite aboard a Falcon 9 rocket, with a launch timeframe currently set for sometime starting in the fourth quarter of next year. Astranis aims to address the market of people who don’t currently have broadband internet access, which is still a huge number globally, and they hope to do so using low-cost satellites that massively undercut the price of existing global telecommunications hardware, which can be built and launched much faster than existing spacecraft, too.

Astranis satellites are much more cost efficient because they’re smaller and easier to make, which changes the economics of deployment for potential carrier and connectivity provider partners. Its approach has already attracted the partnership of Microcom subsidiary Pacific Dataport, an Anchorage company that was formed to expand satellite broadband access in Alaska. This will be the goal of the company’s first launch with SpaceX, to deliver a single satellite to geostationary orbit that will add more than 7.5 Gbps of capacity to the internet provider’s network in Alaska, tripling capacity and potentially reducing costs by “up to three times,” according to Astranis.

This isn’t the first ever satellite that Astranis has sent up to space – it launched a demonstration satellite in 2018 to show that its tech could work as advertised. Astranis’ approach is distinct from others attempting to offer satellite-based connectivity, including SpaceX’s own Starlink project, because it focuses on building satellites that remain in a fixed orbital position relative to the area on the ground where they’re providing service, as opposed to using a large constellation of low-Earth orbit satellites that offer coverage because one or more are bound to be over the coverage area at any given time as they orbit the Earth, handing off connections from one to the next.


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No One Knows How Many US Homes, Businesses Lack Broadband Access


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How many Americans can’t buy home broadband because no ISP offers service in their area? You might think the answer to this question would be straightforward. The FCC releases reports on the state of US networks (wireless and wireline) on a regular basis, including the number of US citizens, principally in rural areas, who lack broadband service.

Unfortunately, there’s good reason to believe that the FCC’s data is wrong. That’s the conclusion of a report, conducted on behalf of the FCC, which studied this problem. The Broadband Mapping Initiative was launched in April 2019 by CostQuest, a research firm working on behalf of US Telecom. US Telecom is an industry lobby group made up of bigwigs like AT&T, CenturyLink, Frontier, and Verizon. The project studied broadband deployments in two states: Virginia and Missouri — to determine whether or not the FCC’s previous method of estimating how many US homes lacked broadband was undercounting the total. The answer: Almost certainly yes.

The Impact of a Lousy Measuring Method

Knowing how many US citizens can purchase affordable broadband is critical to understanding whether citizens can access the tools required for modern life. If state and federal governments don’t know which communities or areas lack service, they can’t create projects to target them for improvement. Unfortunately, the FCC has historically allowed ISPs to report whether a location was served using census block data. If one home or business in a census block could be serviced by the company, the company is allowed to claim that the entire census block can be serviced by the company.

This logically raises another question: How large is a census block? There’s no uniform answer. In cities, a census block might be one city block. In rural areas, they can be much larger. Some census blocks have zero population; others might be entirely populated by a single large apartment building. This approach to data set building might have made sense decades ago, but today we have far more precise tools at our disposal. The image below shows 10 census blocks that would be considered covered under the current categorization system:

Broadband-Service-Current

Now, here’s how much service is actually provided in each of those blocks:

Broadband-Service-New

That’s a whole lot of “Uncovered” in the “Covered” zone.

The term “fabric” refers to the new system US Telecom built for measuring which addresses were actually served for broadband. What the report found collectively is that 38 percent of the rural areas in Virginia and Missouri that supposedly have broadband service…actually don’t. At all. 61 percent of rural locations supposedly served weren’t actually in the proper location. Twenty-five percent of the supposedly served locations were actually more than 100 meters from where they were supposed to be. Twenty-three percent of the locations were attached to the wrong census block.

In Missouri, 9 percent of non-rural locations and 36 percent of rural locations lacked service. In Virginia, 12 percent of non-rural and 39 percent of rural locations were unserviced. Overall broadband availability data was wrong in 48 percent of rural blocks.

Fabric-Report

It isn’t clear exactly how big the gap is nationwide, but these findings suggest the number of people without broadband could be significantly larger than the FCC’s official estimate of 21.3 million people. A total of 445,0000 homes and businesses in Missouri and Virginia that are currently counted as having broadband access are now estimated to lack it. Expand that nationwide, and it’s going to give a much more accurate picture of who does and doesn’t have broadband. It’s also virtually certain to mean we’ve done a much worse job extending coverage than people think we have.

But if you think about it, this actually makes sense. I’ve known more than one person who moved and suddenly found themselves unable to get broadband access, despite previous assurances of service at the new address from their own ISP. Stories periodically surface of ISPs telling rural homeowners to pay tens of thousands to hundreds of thousands of dollars for new fiber pulls. I’ve met people who can’t buy broadband at their homes and rely on expensive cellular wireless for internet access, or use satellite service with its awful latency. The plural of “anecdote” is not “data,” but these stories surface on a semi-regular basis. It may not be a common issue, strictly speaking, but it clearly is a problem. Hopefully building better data sets will help solve it.

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