Try these keywords: usb, join, realtime, remote, etc

Note: V4 Only. The  Scan Public Hotspots  will be deprecated in future firmware. It is strongly recommended to use the  improved  Scan All Newtorks , which offers more possibility to scan and join to different types with real time wireless signal monitoring.

scan all networks

The  Scan Public Hotspots  menu allows you to join to open/unsecured wireless network such as public WiFi hotspots.