Wireless communication devices do not employ any physical medium for the transfer of information. Rather information is transmitted by way of radio, microwave or infrared signals. Long distance and short distance communication is possible with the wireless systems. The technology has increased the versatility of electronic devices. Wireless communication is used in satellite television which allows the users to view their desired channel from any location. Same is the case with satellite internet services which can be accessed from anywhere. Mobile phones, pagers, VHF radios, Ham radios, global positioning system and all use wireless technology. Thus wireless technology is being used for communication purposes, for education and also for entertainment.