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Phone instead of a card or key. What is NFC and how does it work?
Just hold your phone up to a terminal and within moments the payment is made. However, NFC technology is capable of much more. We will explain what NFC is and how it works, what actually happens during NFC mobile payments, what else you can use it for, and how secure it is. We will also show what NFC tags are and how they can simplify some daily tasks.
What would happen if the internet went down for a day?
What if there was a full-day internet outage? An immediate collapse of society wouldn't occur, but daily operations would quickly become complicated because today's world is more dependent on the internet than we often realize. Which services would stop functioning first, and what would happen with payments, transportation, or work?
On this site you can test your internet connection for free.
We recommend you to lower or stop all other internet activities during the test. In other cases the test results are less precise.
Outputs of this test:
- download broadband speed test - what speed are data from the testing server downloaded by
- upload speed - what speed are data to the testing server uploaded by
- web ping - the time needed to send and receive a small amount of data, quite similar to regular ping, but tested by a TCP packet through the HTTP service
How do Internet speed measurements work?
From the user’s perspective, everything is simple. In the web browser, click on the measurement button and wait. Before starting the speed test, it is important to deactivate all tasks, applications and devices that could use the capacity to connect to the Internet. The results would be affected by that and you would not find out anything, or the conclusions would not have the required notification value.
The technical solution and the background of the speed test itself are complex, but to explain it in a few words and very simplistically, the test simulates a situation in which you download or upload data. The measured values are calculated depending on the speed of these transmission. You can test the speed of up to 30 test servers located in geographically different locations.
Last 10 tests
Average for United Kingdom
Downloading
Uploading
Is incognito mode really anonymous? Who still sees what you're doing
Do you think incognito mode hides you from everyone on the internet? In reality, it works a bit differently. We explain what it actually does, when it's sensible to use it, who can still see your activity, and whether history can be traced in incognito mode.
Why Does AI Hallucinate? A Peek Under the Hood of Language Models
AI can answer almost any question in just a few seconds. However, sometimes it confidently states information that is not true. Why does this happen and what are so-called AI hallucinations? In this article, we'll explain how large language models work, why they sometimes create false answers and how developers are gradually trying to mitigate this issue.
What is a CDN and why is internet content copied worldwide
Behind every loaded video, photo, or webpage is a technology called CDN. It is used by streaming services, social networks, and regular websites, yet many people have never heard of it. In this article, we will explain what this abbreviation means, how it works, why internet content is stored in various locations around the world, and why today's internet can hardly do without it.