Wireless internet basically uses two main radio technologies which are single carrier known as direct sequence spread spectrum and multi carrier know as OFDM. The very first wireless product introduced was WAVELAN. Wireless internet provided devices such as mobile phones, PC; games console an access to the internet. Wireless networks have also made it possible to set up what is known as mesh networks. Since wireless internet is used in homes and offices it can also be provided at different hotspots in different locations to common public. Many different businesses such as airports, hotels provide wireless internet on hotspots as a main source of their publicity to attract customers.

A very attractive feature of wireless internet is that it allows peer to peer connectivity through which two to three consumers can connect with each other which is mostly popular in gaming. Personal computers can connect with each other with this technology, mobile phones can connect with each other at hotspots and digital cameras can transfer all sorts of data through this technology. Wireless internet provides connectivity in places where network connection is very rare such as bathrooms, gardens and kitchens. Wireless technology is now a days spreading at a very rapid pace in both the business as well as the industrial sites.

Wireless internet allows LAN (local area connectivity) without the help of cables which reduce costs significantly. Now a days wireless network adapters are being built in most of the devices especially in laptops which makes the price of wireless chips very low. The wireless networks have a limited range like for example a typical wireless router may have a range of around 32m indoors and approximately 95m outdoor. Due to these reach limitations of wireless internet the power consumption becomes fairly high. One important issue is the wireless pollution or large number of access points in a single area which can prevent interface with the usage of access points used by others. This problem persists basically in high density areas which are mostly crowded such as buildings, apartments and office buildings which have large number of access points.

Wireless system is mostly being used in homes these days for security measures. Recently in couple of years wireless embedded products have been introduced which have a real time operating system attached with it which allows any device to connect with it which has a wireless access port. The data from these embedded wireless technologies can be uploaded from the home network to any place in the world.