There seems to be a craze going on about the Wi-Fi enabled devices and gadgets. People are running around to grab Wi-Fi enabled phones. The fact, there are very few people who know the true meaning of Wi-Fi and why it is so popular. There are people who even think that it is just something like the Bluetooth, to connect to other devices.
So what exactly is a Wi-Fi facility? Well, the Wi-Fi is a way of connecting to the internet. It stands for Wireless Fidelity. The function of such a device is exactly what the name indicates; it is used for efficient and stable wireless connections. If you have this facility in your phones you can connect to the internet through a wireless connection. It is also possible in some laptops.
The Wi-Fi facility is something which is a steeping stone to advanced communication systems, or for that matter, it is a great step towards advanced technologies. The Wi-Fi enabled devices are much easier to use and very efficient. There are many factors associated with the design, implementation and use of this device and so, it is a broad subject.
You would be wondering about the distance up to which it can connect to the internet. The general Wi-Fi device has a very short range. Of course, the system needs an antenna somewhere from which it can receive the connection. Though small in range, there are specialized Wi-Fi systems which can have large ranges. The highest range is that of the connection in Italy where the range is about 320km.
A Wi-Fi is an improvement over the wired connections. It is not unlike the Bluetooth but has a different function. Another factor that deals with Wi-Fi is the data security. The data is reasonably secure in these systems and various mechanisms are implemented to increase the security.