Is it possible to get the presence data our of the WiNG Controller or Access Points?
Presence data usually include the RSSI of nearby clients (also unassociated ones).
I found this doc but I am not sure it is updated:
https://extremenetworks2com.sharepoint.com/sites/kcs/External/Forms/AllItems.aspx?id=%2Fsites%2Fkcs%2FExternal%2F000034603%2FWiNG5_Sensor_RSSI_Feed_How-To-0709-Rebranded-Final%2Epdf&parent=%2Fsites%2Fkcs%2FExternal%2F000034603&p=true
Or does eventually the Extreme Management Center (ex Netsight) provide a way, such API, to send Location data (including estimated position) of these clients to a 3rd party server?
I did not find anything about that but I know some vendors that claim this to be doable.