Those "weird strings" are the mac addresses of the access point and the connected device/client respectively.
The output format was choosen to distinguish between networks with the same network name "ESSID". There are many cases where several access points share the same network name.
The output can always be "changed" (skip the "hash", in this case "ESSID:BSSID:MACOFCLIENT:" etc) with the --outfile-format option (see --help).
The output format was choosen to distinguish between networks with the same network name "ESSID". There are many cases where several access points share the same network name.
The output can always be "changed" (skip the "hash", in this case "ESSID:BSSID:MACOFCLIENT:" etc) with the --outfile-format option (see --help).