What about the security? Is there a possibility of stealing our data? Security is your personal decision, but having a wireless connection we should pay attention to protect our private files and encrypt sent messages. Actually, the security modules were very important since the beginning of the Wi-Fi projection. In order to prevent intercepting your data by the others the designers implemented many security techniques, like Wi-Fi Protected Access (based on encryption), Virtual Private Network (making virtual "tunnels"), Media Access Control Filtering (rejecting unknown MAC addresses), RADIUS Authentication and Authorization (using login and password) or Kerberos (key distribution). There is also a possibility to combine some of these security mechanisms making your transmissions even more secure.On the other hand providing such security in public places (like Internet cafes) may not meet its expectations. Connecting to protected wireless network you will be asked about a security code, encryption key or a password. If you do not know them, you will not be able to establish a communication link and use Internet resources. Most of public areas do not use security modules because of that reason making Wi-Fi users data unsafe.

Wi-Fi is a multi-purpose way of networking. People can apply it almost everywhere - in a house, office etc. It is also very flexible. Computers can be easily moved within its range. The users avoid different problems, such as destroying the wires. Wireless networking is a very cheap technology. We do not have to employ an administrator because the use is very simple. It is easy to use the Internet, check e-mail from each computer we have in our local network. Resources sharing is as easy as never before. People do not have to spend money on printers or hard disks. For example, it is possible to buy one big disk instead of a few smaller ones. That saves money. Using wireless LANs in offices is very advantageous. Programmers can easily co-operate while working on a complicated program, they are allowed to take their portable computers to conferences and to use the Internet's resources then. Briefly put, future belongs to Wi-Fi. This technology is still developing and already now is on a high level. It becomes more and more common for people. It's certain that within a few years wireless LANs will replace the wired ones.