Beam Density not showing up?

Mist’s RF glasses feature gives you a real-time view of the RF environment from the mobile user’s perspective. This lets you detect coverage holes as the user moves around.

The Beam Density map is the visual provided when using RF glasses to give the user a good representation of RSSI strength depending on location.  In order for Location estimates to be accurate, we require a minimum of 3 APs on your site.  If you have less than 3 APs, the location estimate will not be processed and stored.