A wireless interface is similar to a physical interface only it does not include a physical connection. The FortiWiFi units enables you to add multiple wireless interfaces that can be available at the same time. On FortiWiFi units, you can configure the device to be either an access point, or a wireless client. As an access point, the FortiWiFi unit can have separate SSIDs, each on their own subnet for wireless access. In client mode, the FortiWiFi only has one SSID, and is used as a receiver, to enable remote users to connect to the existing network using wireless protocols.
Wireless interfaces also require additional security measures to ensure the session does not get hijacked and data tampered or stolen.
For more information on configuring wireless interfaces see the Deploying Wireless Networks Guide.