Several major wireless carriers now carry a “MiFi” device which is essentially a mobile broadband (Internet access) device packaged up with a battery and a wireless access point. This device provides Internet access wherever you can reach your mobile carrier’s network. Simply power on the MiFi device (about the size of a deck of cards) and it connects to the Internet. The MiFi then broadcasts a WiFi signal (regular wireless access, as found in every modern laptop) to nearby Wifi-enabled devices.
In our testing, we have found that this device works well for basic web browsing and email, but for high-demand applications (database applications, large file transfers, etc.) it is clearly limited by the Internet access speed. For extended use, it should always be connected to a USB port for charging, as its internal battery is typically only sufficient for about one hour’s use.
Here are links to pages with more information about two carriers’ MiFi mobile devices: