If you check out the datasheet linked form the DigiX WiFi wiki page - there is a command to scan for networks, so this should be pretty easy to do.
That seems to be just the API for '
3.1.4. STA Setting Page', where you can list available access points to connect to.
Real scanners search as well for hidden SSID and other stuff.
At the end, it depends, why you are planning to scan the network:
If your goal is e.g. enforcing company security policies, which prohibit any use of non company WLAN, its important, that you can see also "hidden" networks.