What do you mean, MiFi?

MiFi is a portable broadband wireless device that is the size of a credit card, with a modem, router, and access point in one function. The built-in modem can connect to a wireless signal, and the internal router can share the connection between multiple users and wireless devices.

MiFi is also sometimes referred to as a personal "hotspot", which simplifies the setup process for small LANs. MiFi can also support 5 users, including digital cameras, notebooks, games and multimedia players with Wi-Fi-enabled devices available online. MiFi devices can be used to set up a specific network to share a network connection at any location through a cellular connection.