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US Army to expand deployment of LiFi as pureLiFi is awarded another big deal
Technologies such as WiFi, 4G and 5G use radio frequencies to transmit data, which produce large areas of radio frequency emissions that are easy to detect, intercept, and can cause overcrowding resulting in slow speeds and unreliable communications due to increased RF congestion. LiFi uses light rather than radio frequencies resulting in wireless communications that is more reliable, significantly more secure, and simpler to deploy.

The US Army Europe is expanding their use of this cutting-edge technology as LiFi has proven to be reliable for the most critical communications. LiFi not only enhances the US Army’s wireless connectivity toolset, but has demonstrated in action, that LiFi solves real problems faced by defence and national security.

pureLiFi are recognised rising stars in the global technology scene and named one of the “EE Times Silicon 100 start-ups to watch” two years running. Having now secured multiple million-dollar deals with the US Army Europe, pureLiFi have officially made their mark on the wireless communications marketplace.

With growing demand for bandwidth hungry technologies, such as augmented and virtual reality, next generation manufacturing and the metaverse, new wireless communications technologies are needed to enable new use cases and technology breakthroughs.

pureLiFi is now offering high-speed components ready for integration into consumer electronics such as mobile phones, laptops and tablets, with a view of taking LiFi mainstream and offering unprecedented bandwidth, ultra-fast speeds and military grade security to the consumer.

Older Kindles may lose internet connection
"Starting in 2021, some prior generation Kindle e-readers will not be able to connect to the internet using cellular connection through 2G or 3G networks," Amazon told its US customers this week.

The switch-off is outside of Amazon's control, as mobile networks repurpose the older parts of their radio spectrum for faster, more modern standards.

The same situation applies in other countries on varying timescales - in the UK, for example, operator BT has announced it plans to phase out 3G support by 2023.

Other British operators have yet to announce their plans.

The switch-off affects all sorts of older devices, such as 3G-only smartphones.

But such devices tend to be replaced every few years, unlike an e-reader, which may be replaced only once it is completely broken.

The following devices will be able to connect online by wi-fi only:

Kindle Keyboard (third generation)
Kindle Touch (fourth generation)
Kindle Paperwhite (fifth, sixth and seventh generation)
Kindle Voyage (seventh generation)
Kindle Oasis (eighth generation)
Those unsure of what model they own can check Amazon's website.

According to The Verge, Amazon has been emailing some affected customers warning them about the change and "thanking them" for being "one of our earliest customers".

It is offering a discount for those who want to upgrade to one of its premium modern models.

It is also possible to "sideload" books on to Kindle, through a Universal Serial Bus (USB) connection, but that requires finding and downloading e-books in the correct format.