Tag Archive for 2023

LiFi: Can It Revolutionize Wireless

LiFi has been standardized by the IEEE. They released the 802.11bb standard for LiFi in June 2023. LiFi stands for “light fidelity.” Unlike WiFi, which uses radio waves, LiFi uses light waves from LED lamps or other light sources to send and receive data. I first wrote about Lifi in 2011. The IEEE started working on the standard in 2018. Standardization at IEEE is a critical step to enable interoperability between multiple vendors. The semiconductor and mobile phone industries are interested in LiFi.

LiFi logoDominic Schulz, lead of LiFi development at Fraunhofer HHI, told Fierce Wireless that LiFi offers high-speed mobile connectivity in areas with limited RF. He says it can be used in “fixed wireless access, classrooms, medical and industrial scenarios, complementing or serving as an alternative to Wi-Fi and 5G.”

How LiFi works

LiFi works by modulating the intensity of light emitted by an LED lamp at very high speeds. Switching the LED on creates a logical 1, and switching the LED creates a logical 0. These signals are imperceptible to the human eye. The modulated light signals are then detected by a photodiode device, such as a smartphone camera or a dongle, that converts them back to electrical signals. The process is bidirectional, meaning that data can also be sent from the device to the lamp using infrared light.

How LiFi works educationaltechs

The benefits of LiFi

LiFi has several advantages over WiFi, such as:

  • data rates of up to 224 GbpsHigher speed – LiFi can achieve data rates of up to 224 Gbps, which is much faster than WiFi’s maximum speed of 6.9 Gbps. This is because LiFi uses a much larger spectrum of visible light, which is almost 10,000 times larger than the spectrum occupied by radio waves. However, LiFi requires a direct line of sight between the transmitter and the receiver, which means that the device has to be within the range and angle of the lamp.
  • Greater security – LiFi is more secure than WiFi because light cannot penetrate through walls or other opaque objects. This means that LiFi signals are confined to a specific area and cannot be intercepted by unauthorized users. Moreover, LiFi can also use encryption and authentication techniques to enhance security.
  • more reliable than WiFiIncreased reliability – LiFi is more reliable than WiFi because it is less affected by environmental factors, such as weather, noise, or electromagnetic interference. Moreover, LiFi can also provide better coverage and quality of service by using multiple lamps to create a network of access points.
  • Better efficiency – LiFi is more energy-efficient than WiFi because it uses LED lamps that consume less power and have a longer lifespan than conventional bulbs. Moreover, LiFi can also reduce interference and congestion in the radio spectrum, which is becoming increasingly crowded due to the growing demand for wireless services.

Challenges

LiFi is currently not widely available in the marketThe adoption of the IEEE standard does not guarantee that LiFi will take off. LiFi faces some challenges before it can become widely adopted, such as Limited availability. LiFi is currently not widely available in the market due to its newness and cost. There are only a few companies that offer LiFi products and services, such as pureLiFi, Oledcomm, or Signify. Moreover, LiFi requires infrastructure development and investment to install LiFi equipment to make the tech usable.

Applications

  • Education: LiFi can provide high-speed internet access and interactive learning experiences in classrooms and libraries. For example, LiFi can enable students to download assignments or stream videos from LED lamps or projectors. Moreover, LiFi can also support augmented reality or virtual reality applications that enhance learning outcomes.
  • Healthcare: LiFi can provide secure and reliable communication and data transfer in hospitals, clinics, or laboratories. For example, LiFi can enable doctors to access patient records or medical images from LED lamps or monitors. Furthermore, LiFi can also support wireless medical devices or sensors that monitor vital signs or deliver treatments.
  • LiFi can enable drivers to access traffic informationTransportation: LiFi can provide fast and safe communication and navigation in vehicles. For example, LiFi can enable drivers to access traffic information or entertainment from LED headlights or taillights. Moreover, LiFi can also support autonomous driving or smart city applications that improve safety and efficiency.
  • Industry: LiFi can provide robust and flexible communication and automation in factories, warehouses, or offices. For example, LiFi can enable workers to access data or instructions from LED lamps or displays. Additionally, LiFi can also support wireless robots or machines that perform tasks or operations.

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LiFi is a promising wireless technology with the potential to revolutionize the future of wireless connectivity. However, it also faces some challenges.

To jump on the LiFi bandwagon you will need to replace your existing LED bulbs with new LiFi enabled LED bulbs. You will also need a photosensors (also called photodetectors) in your smartphones and laptops. Photosensors sensors are a new piece of technology which can “read” incoming light.

 

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Ralph Bach has been in IT long enough to know better and has blogged from his Bach Seat about IT, careers, and anything else that catches his attention since 2005. You can follow him on LinkedInFacebook, and Twitter. Email the Bach Seat here.

Climate Change and the Future of Coffee

Climate change is threatening one of the most popular beverages in the world: coffee. Coffee lovers not only enjoy the rich aroma and comforting warmth of a cup of Joe but also cherish the ritual of sitting down with a fresh brew. With over 2 billion cups consumed daily, coffee plays a vital role in the economies of more than 50 countries along the Coffee Belt, spanning the globe along the equator. However, climate change poses significant challenges to coffee production, impacting the quantity, quality, and associated costs and risks of growing beans.

the Coffee Belt

How climate change affects coffee plants

The most unexpected effect of climate changeMost people in the world drink coffee made from either arabica (Coffea arabica) or robusta (Coffea canephora) coffee beans, both of which are susceptible to the effects of a warming climate. Climate change affects coffee plants in multiple ways, including reduced growing areas, increased pest prevalence, and diminished quality. Coffee plants rely on specific temperature and rainfall patterns for growth. Inadequate or unpredictable water supply can hinder the growth and bean production of coffee plants. Extreme temperatures, whether too high or too low, can stress the plants, resulting in lower yields and decreased quality. Additionally, the changing climate is impacting the suitability of areas where coffee plants thrive.

How climate change affects coffee plants

Coffee plants are sensitive to changes in temperature, rainfall, humidity, and sunlight, as they require specific climatic conditions to produce high-quality beans. Climate change can disrupt these conditions, causing various issues for coffee plants, such as:

  1. Heat stress: Higher temperatures can reduce the photosynthesis and respiration of coffee plants, leading to lower yield and quality. Additionally, warmer temperatures can encourage the proliferation of pests and diseases like the coffee borer beetle, which damages crops by boring into cherries and laying eggs inside the seeds. The rising temperatures have also created favorable growing conditions for coffee rust, a fungal infection that can reduce yields. Conversely, lower temperatures can impede the growth, development, flowering, and fruiting of coffee plants.
  2. Water stress: Sufficient and consistent water availability is crucial for coffee plants to grow and produce beans. However, climate change can lead to droughts or floods, disrupting the water balance and stressing the plants. Droughts decrease soil moisture, impacting photosynthesis and transpiration, resulting in smaller and fewer beans. Floods increase the risk of fungal infections and waterborne diseases that can harm both coffee plants and beans.
  3. Altitude shift: Coffee plants thrive within specific altitudes, soil types, shade, and biodiversity. Climate change may force coffee farmers to relocate or adapt their production systems. For example, studies suggest that by 2050, up to 50% of the currently suitable areas for Arabica coffee, the most widely consumed type, could become unsuitable due to climate change. This would necessitate coffee farmers to move to higher altitudes or switch to more resilient varieties like Robusta or hybrid coffees. However, these options may result in higher costs, compromised quality, or loss of traditional knowledge and culture.

How climate change affects coffees flavor

Climate change also affects the flavor of coffee. Several factors can impact the quality of coffee, including:

  1. Flavor and aroma: Coffee’s flavor and aroma primarily derive from chemical compounds in the beans, such as sugars, acids, oils, and volatile compounds. These compounds are influenced by temperature, rainfall, humidity, and sunlight during the growth and development of coffee plants. Climate change can alter these factors, leading to different or undesirable flavors and aromas. For instance, higher temperatures can diminish acidity and sweetness, while lower temperatures can delay ripening and reduce aroma.
  2. Nutritional value: Coffee contains various antioxidants, including polyphenols and chlorogenic acids, which offer health benefits. The antioxidant content of coffee beans is influenced by environmental conditions during growth. Climate change can affect the metabolism and biosynthesis of these antioxidants. For instance, higher temperatures can reduce the polyphenol content of coffee beans, while lower temperatures can increase it.

How you can help coffee adapt

Coffee represents not only a beverage but also a culture and livelihood that warrant protection. You can contribute by supporting the diversification of coffee. Certain varieties, such as Liberica (Coffea liberica), are more heat-tolerant and are gaining attention from coffee importers and sellers. Consider purchasing Liberica online.

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Speak up about climate change. Pick a topic and act on it – we all need to do something. It is all one world. 

 

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Ralph Bach has been in IT long enough to know better and has blogged from his Bach Seat about IT, careers, and anything else that catches his attention since 2005. You can follow him on LinkedInFacebook, and Twitter. Email the Bach Seat here.

First Mobile Call Celebration Put on Hold

50th Anniversary of the First Mobile Call Put on Hold2023 marks the 50th anniversary of the first mobile call. The first mobile cellular phone call was made on April 3, 1973, on Sixth Avenue near the Midtown Hilton Hotel in New York City. The call was made by Marty Cooper the “father of the cell phone” who worked for Motorola. He wrote in his book, “Cutting the Cord,” that he called his rival Joel Engel, head of AT&T’s Bell Labs, to tell him that his team at Motorola had created a functional portable phone.

First mobile call

Dynatac Cellular TelephoneFew people would recognize that first cellphone as a mobile. The “mobile” DynaTAC (Dynamic Adaptive Total Area Coverage) phone, was 9 inches tall and weighed 2.5 pounds. It took ten hours to charge a battery that only allowed 35 minutes of talk time. It took another 10 years for commercial cellular service to become a reality because cell towers and other infrastructure had to be put in place first. In 1983, Motorola started selling the first cell phones for a price-tag of between $3,500 and $4,000.

How things have changed in 50 years. Since 2015, there have been more cell phones than people in the world. A survey commissioned by cloud communications company Sinch revealed that 23% of those surveyed said they couldn’t last an hour without their cell phone. Additionally, nearly 72% said they couldn’t imagine going more than a weekend without their mobile phone.

Celebrating that first call

Marty Cooper the “father of the cell phone”To honor of the 50th anniversary of that first cellular call, Mr. Cooper, who is 94 years old, re-enacted that call in New York City. There was to be a “Celebrate the Call” sidewalk historic marker place on Sixth Avenue near the midtown Hilton near where that first call was made. However, the marker and commemoration event had to be cancelled. According to Fierce, the NYC Transportation Department has not approved the marker.

The organizers posted this to the Celebratethecall website.
Celebrate the Call - Postponed

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Ralph Bach has been in IT long enough to know better and has blogged from his Bach Seat about IT, careers, and anything else that catches his attention since 2005. You can follow him on LinkedInFacebook, and Twitter. Email the Bach Seat here.

Why Meta Released Threads Now

Unless you sleeping under a rock, you may have heard that Facebook / Meta / Instagram (META) has released an alternative to Twitter, called Threads. Other have found the app to be incomplete. Even Instagram CEO Adam Mosseri wrote there are “tons of basics” missing.

What Threads is missing

Reviewers say the app is missing functions like:

  • The Threads app is missing functionsChronological feeds,
  • Direct messaging between users,
  • The ability to edit a post,
  • Following feeds,
  • Hashtags,
  • Search capabilities, and
  • Web version.

The app seems rushed. Why did Zuckerburg push an incomplete product out the door now?

ChatGPT

catch up to industry leadersThe first reason could be the meteoric rise of generative artificial intelligence which Meta has no answer for. Threads represents a huge new opportunity for Meta to gather training data for its own AI technology. This new data could help it catch up to industry leaders. Microsoft (MSFT) has added OpenAI into a Microsoft Bing chatbot. Google (GOOG) is also working on a chatbot named Bard.

Meta has released AI chatbots in the past. But they were not very good. One, named BlenderBot, was criticized for being simply… not very good. Another, code-name Galactica whose goal was to use machine learning to understand and organize science for its users. Facebook fed it 48 million science papers. It created scientific nonsense, or just provided incorrect information. It struggled to understand or compute math at the grade-school level. Researchers shut down the system after just two days.

Train a chatbotIt takes vast amounts of data to train a generative artificial intelligence. A generative artificial intelligence is a system that can produce new text, images, video and other outputs like code and music on their own. These systems rely on the data used to train it, and can reflect any biases, errors or falsities inherent in the original dataset. By mandating Threads access through Instagram’s 2.35 billion users, Meta can instantly gain all of Instagram’s data to feed it’s artificial intelligence. By feeding the data from Threads and Instagram into it AI, Meta has significantly increased it ability to train AI to take on OpenAI, Microsoft, and Google.

published disinformation produced by a Russian troll farm2024 Elections

Another possible reason Threads has surfaced now is the U.S. elections. Election season 2024 is heating up and it is estimated that $1.7 billion dollars will be spent on digital media for the elections. Surely Zuckerberg want to use Threads to grab another large slice of that pie.

It is important to remember the shameful role that Zuckerberg’s Facebook played in the 2016 election. During the 2016 election cycle Facebook published disinformation produced by a Russian troll farm to as many as 10 million people. Some of the ads were paid for in Russian currency. And his subsequent denial, saying that fake news on Facebook influenced the 2016 election was a “pretty crazy idea.” 2016 should be ring the warning bells for people who cherish democracy.

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Maybe Zuk wants this to be the opening event leading up to the promised cage match between Zuk and fellow megalomaniac techbro Elon Musk.

Whatever reason Zuckerger had to push an incomplete product out he door, his history says it won’t be good for us.

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Ralph Bach has been in IT long enough to know better and has blogged from his Bach Seat about IT, careers, and anything else that catches his attention since 2005. You can follow him on LinkedInFacebook, and Twitter. Email the Bach Seat here.

KOSA: A Bad Idea for Online Safety

KOSA: A Bad Idea for Online SafetyThe Kids Online Safety Act, known as KOSA, is another half-assed publicity grab. The politicians fail to address the root cause of the problem – data collection. We can all agree that social media is bad for kids. There is enough proof from multiple studies and former social media company employees. Therefore, KOSA is not the answer. It will infringe on the rights and interests of all internet users.

Kids Online Safety Act

Two-tier Internet in the U.S.To begin with, the Kids Online Safety Act, known as KOSA introduced by Senators Richard Blumenthal (D) and Marsha Blackburn (R), would establish a two-tier Internet in the U.S. The bill requires that sites that are ‘likely to be accessed by kids‘ act in the “best interest of users who are 16 or younger.” That means that all platforms would be responsible for mitigating the risk of physical or emotional harm to young users. This includes “the promotion of self-harm or suicide, encouragement of addictive behavior, enabling of online bullying or predatory marketing.” Sound nice; however, KOSA is not the solution we need. Here are some of the reasons to oppose KOSA:

Kids Online Safety Act safety

The KOSA requirements would mandate that platforms have parental controls. These government-mandated controls could be harmful to kids in abusive situations. According to Fight for the Future, a coalition of over 50 civil society groups, “KOSA risks subjecting teens who are experiencing domestic violence and parental abuse to additional forms of digital surveillance and control that could prevent these vulnerable youth from reaching out for help or support.

Additionally, the KOSA requirements would endanger VPNs (one of the government’s favorite boogey-techs). The group wrote; “… by creating strong incentives to filter and enable parental control over the content minors can access, KOSA could also jeopardize young people’s access to end-to-end encrypted technologies, which they depend on to access resources related to mental health and to keep their data safe from bad actors.”

KOSA is government censorship

seeking to make political pointsKOSA would give the President control over what people see online. The government would create a “Kids Online Safety Council” that would advise the government on implementing and enforcing KOSA. As a result, the legislation’s requirement to restrict access to topics such as sex education, LGBTQ issues, and mental health from minors could cause platforms KOSA could force platforms to self-censor just to avoid the hassle and costs.

Furthermore, Fight for the Future writes that censorship would be politically driven. “Online services would face substantial pressure to over-moderate, including from state Attorneys General seeking to make political points… KOSA would cut off another vital avenue of access to information for vulnerable youth.”

KOSA encourages more data collection

incentivize sites to collect even more informationAccording to Fight for the Future, the bill would incentivize sites to collect even more information about children to verify their ages and place further restrictions on minors’ accounts. They explain,

“Age verification may require users to provide platforms with personally identifiable information such as date of birth and government-issued identification documents, which can threaten users’ privacy, including through the risk of data breaches, and chill their willingness to access sensitive information online because they cannot do so anonymously.”

Therefore, they conclude, “Rather than age-gating privacy settings and safety tools to apply only to minors, Congress should focus on ensuring that all users, regardless of age, benefit from strong privacy protections by passing comprehensive privacy legislation.”

Kids Online Safety Act unintended consequences

unintended consequencesKOSA would also create unintended consequences. The unintended consequences include driving children to use less secure or more harmful platforms. The Kids Online Safety Act would make kids more vulnerable to online predators who could exploit their age verification information. It would also undermine the trust and communication between children and parents, as well as between platforms and users.

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There are valid concerns about the impact of social media on us all. But the Kids Online Safety Act misses the point. Congress should be targeting data collection. Nearly all social media platforms and online businesses collect personal data from their users. The EFF points out that all social media firms harvest and monetize our personal data and incentivize other online businesses to do the same. The result is that detailed information about us is widely available to purchasers, thieves, and government subpoenas.

Consider location data brokers, for example. Our apps collect detailed records of our online activities without our knowledge or genuine consent. The app developers sell it to data brokers, who will in turn sell it to anyone who will pay for it. An election denier bought it to try to prove voting fraud. One broker sold data on who had visited reproductive health facilities.

If a bad actor or the government wanted to buy this data, it could probably find a way to do so. Collecting more data will not stop the bad actors from acquiring PII.

The better approach is to limit how all businesses collect personal data. This would de-incentive data collection and reduce the supply of data for bad actors.

Everybody should be allowed to make informed choices based on their own values and preferences.

 

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Ralph Bach has been in IT long enough to know better and has blogged from his Bach Seat about IT, careers, and anything else that catches his attention since 2005. You can follow him on LinkedInFacebook, and Twitter. Email the Bach Seat here.