As everyone knows, current 802.11 Wi-Fi is based on wired encryption protocol (WEP) standards, which were defined for hard-wired networks, which offer much more management and control than wireless systems. Since 802.11 wireless -- the basic type of which is offered through a variety of "hotspots" -- is basically insecure, a lot of companies restrict the use of such systems for transmitting sensitive or mission critical information.
The planned 802.11i specifications, which are still being reviewed and adapted by committees, should address all these problems since they will tackle the issue from firmware and eventually new silicon devices. Standards organizations are looking to make the new specifications "backward compatible", allowing them to work with current and emerging 802.11 technologies. Most likely, though, companies and individuals will have to upgrade to the newer and more secure devices in order to take advantage of the full security benefits.