MiFi is a portable broadband wireless device about the size of a credit card that combines the functions of a modem, router and access point in one. The built-in modem taps into a wireless signal, and the internal router shares the connection among multiple users and wireless devices. Sometimes called a personal "hotspot," MiFi simplifies the process of setting up a small LAN. MiFi can support 5 users at the same time, and all devices that support Wi-Fi, including digital cameras, notebooks, games and multimedia players, can access the Internet. MiFi devices can be used to set up a specific network and enjoy the best network connectivity anywhere over a cellular connection. Here are some other features of MiFi: · ① Storage capacity · ② Host application capability · ③ Support EV-DO, UMTS/HSDPA and 3G technology · ④ Built-in battery supports 4 hours of effective use and 40 hours of standby · ⑤ Automatic email synchronization Settings and Virtual Private Network Connection · ⑥Supports remote management MiFi was developed by the company Novatel, and according to Novatel, it is a "mobile smart hotspot". Verizon announced on May 8, 2009 that it became the first operator to supply Novatel MiFi wireless broadband hotspot routers to the United States. Novatel MiFi2200 router can support EVDO Rev-A 3G network and provide 3G access enjoyment through 802.11gWiFi network. The built-in battery provided by the product can last for 4 hours. The product will be available starting May 17 for $100. The router also supports WPA2 security protocol, built-in firewall function, and supports VPN function. The device can also be connected to computers using Mac OS X10.4, Windows2000 and above operating systems through the USB interface, and the computer can be connected to the home wireless network through WiFi connection.

Wi-Fi is a technology that can connect terminals such as personal computers and handheld devices (such as PDAs and mobile phones) to each other wirelessly. Wi-Fi is a brand of wireless network communication technology owned by the Wi-Fi Alliance. The purpose is to improve the interoperability between wireless network products based on the IEEE 802.11 standard. Nowadays, most people confuse Wi-Fi and IEEE 802.11. Wi-Fi is even equated with wireless Internet.