I think they not have another activities and still scan networks
You can try five methods to simple crypt ssid/pass
eg. every ssid chars +1 and pass -1 or something like this
is really a lot of possibilities
SDM Energy Meter: https://github.com/reaper7/SDM_Energy_Meter
MLEDScroll (TM1640 led matrix): https://github.com/reaper7/MLEDScroll