This is especially true for temporary networks, such as the type companies often set up at conventions. Warehouse environments are another prime candidate for wireless networks. I recently assisted a friend with the process of installing a wireless LAN in a large warehouse. My friend's employees use notebook computers with barcode readers to keep track of inventory. Now, they can update the inventory database in real time through a wireless link as products come and go.
Wireless networks are also great for notebook users in an office environment.
Having a wireless LAN in place saves mobile users the hassle of plugging into a docking station every time they want to access the network. Instead, they can access the network from anywhere in the building. I've loaded a terminal server client on my Windows CE machine, and I can use this client to access any of my servers at the desktop level, without having to actually go to the server room. There are several different varieties of wireless networks. The 3Com Air Connect system offers an 11 Mbps network connection that functions very similarly to Ethernet.