The multiple SSID feature allows you to broadcast additional SSIDs (or wireless network names). When wireless client devices are searching for available wireless networks to connect to, the SSIDs (or wireless network names) will appear as separate wireless networks in addition to your primary wireless SSIDs and/or guest network SSIDs. Since they appear as separate wireless networks, they are also referred to as virtual APs (Access Points) since they appear as separate wireless access points but are actually all being broadcasting and managed by a single wireless access point. Each virtual AP can be configured each with a different SSID (or wireless network name), security type and additional settings for wireless devices to connect. You can use the multiple SSID feature to setup with different security types and keys to keep your primary wireless network security information private.