Wi-Fi is basically wireless network which allows devices to communicate with other device without using cables. Wi-Fi is trademark of Wi-Fi Alliance, an international association of companies involved with wireless LAN technologies and products. Wi-Fi capable device use IEEE 802.11 standard for wireless communication.
Wide range of Wi-Fi enabled devices are available now like Laptops, mobile, Gaming consoles, digital audio players etc. These devices can connect to network or internet via an access point. Typical range of indoor Wi-Fi network is 18 meters which can be more if used outdoors. These Wi-Fi adapter’s / devices transmit at frequencies of 2.4 GHz or 5 GHz. This frequency is considerably higher than the frequencies used for cell phones. The higher frequency allows the signal to carry more data.