What Is Wi-Fi

Wireless technology has become a prominent field in the area of networking. It has many uses. The most important being portability and mobility. With the help of wireless technology people now can send and receive messages, phone calls, faxes, read files, login on remote machines etc. and perform all the above mentioned duties from anywhere on land, sea, or air.

The technology of wifi has stormed the field of wireless networking. There are numerous applications of wifi. Nowadays it is very useful and critical in business world because today's business gives more emphasis on the communication of the information. Wifi also finds usage at home, workplaces, shops, any public places etc. the study of the advantages and the risks involved in the wifi system is necessary in order to exploit the full use of it.

About wireless networks.

The transfer of information from node to another with the help of electromagnetic waves is referred to as wireless communication. Signals are normally broadcast through free space and are available to anyone who has device capable of receiving them. A new technique of wireless data transmission known as wifi (wireless fidelity) has been developed. Wifi uses the radio waves to transmit the data. It uses the frequency of 2.4GHz and uses SSID for addressing purposes. SSID stands for Service Set Identifier. It uses a set of characters or numbers addresses so that the sending access point can be identified. Any access point which wants to receive the signal must have the same set of SSID as that of sender's SSID.

Advantages.

The usage of wifi system has numerous advantages. The most important advantage is the cost factor. Since there are free hotspots or access points, a free connection between two nodes cab be established in the network.
A wireless network also provides the facilities of mobility. Hence it is now possible to have a wireless connection, free of hard wired connections.It is also easy to install and configure wifi network. It is also easy and generally faster, internet connections are possible by wifi networks.

Dangers and risks.

Since wifi is a wireless connection it uses the shared wireless space. Hence it is possible that many signals of similar frequencies can interfere with each other and cause unnecessary distortions. This leads to the loss of data and the received data may get corrupted. Hence wifi does not ensure an error free connection.
Another danger involved is related to security of data. It is possible that users who are new to the wifi network may setup an insecure access point, without setting the various security configurations.
It is also possible that some miscreants may use the same default SSID everywhere to access the secured access points illegally. The best way to counter these dangers is to learn and study the configuration of the secured network and make it a rule to always use a different SSID for access point and never keep the default value.


Monday, June 23, 2008

Wi-Fi Finder

Nowadays wireless network or wifi to be more precise is getting very popular among the users. As a result of its popularity and its demand many wifi hotspots are installed throughout the world. Today these hotspots can be found in offices, shops, school, colleges and many public places. Now people are getting more and more interested to know the locations of these hotspots. Hence the devices used in locating these hotspots are beginning to flood the market.

The devices used to find the hotspots are known as wifi finder. These are the portable devices which can be carried in the pocket or there are various websites in the internet which gives and exhaustive listing of the various locations of hotspots.

The features of wifi finder.

Found in many shapes the portable wifi finder is the last thing anyone would refuse to buy. As obvious from the name, the portable wifi finder can even be carried in pockets or purses. The best thing is yet about to come, within no time the wifi finder helps you track a wifi signal most appropriate for you to get connected to the wifi network in the area with just one click. The wifi finder is available in the markets and can also be purchased from sources such as web sites in the internet like .

Another type of wifi finder exists in the market. These devices can be connected to our system through USB (universal serial bus) ports. This type of device can be said to be dual purpose. In other words it can also be used as wifi adapter. This device also has a LCD screen which displays an access point’s security scheme, the signal strength of the WiFi network available in the area, and the wireless network standard available. Therefore this device can work even if the wireless system to which it is connected is switched off. If it is not available in the local electronics shop it can be purchased from the outlets like Tiger Direct.

Purchasing the wifi finder is not everyone’s first choice. People who are connected to the wifi network at either home or office can get easy access to various websites. It isn’t that difficult as it sound when you have enough time to spare and list out the various places where you would require your wifi device the most. This can be done easily by just typing in the your next location and get all your hotspots for that location listed right in front of you.

This process requires the detailed information about your location including the city or the province or the country or even the postal code. The user who has logged on to these sites can also be asked to give the information regarding the distance between users place and the nearest hotspot point, the user may also be asked to give the details about the type of the destination like a park, a school, a college, a hotel etc. There is also an option for specifying whether user wants free access points or the ones by service providers.

You can also find more info on Wi-Fi Phone and Wi-Fi Security. Topwifireviews.com is a comprehensive resource to know about Wi-Fi Wireless Network Technology.

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