with android oreo the storage format of wifi credentials changed from the traditional wpa_supplicant.conf to a new WifiConfigurationStore.xml.
WifiConfigurationStore.xml may not be compatible between android versions
Encryption of android devices is hidden behind a ‘require password to start device’ option.
LineageOs + no google play services make a phone super snappy while preserving battery life
RTL SDR are DVB-TV receivers that can be used as low-cost SDRs (software defined radio) that can read the whole radio spectrum
A RTL SDR can receive FM Radio
A RTL SDR can receive clock updates
A RTL SDR can be used to track plane using their transponder signals
Cheap power bricks for laptops can emit a lot of radio noise. My cheap brick emits a lot of noise in the typical FM radio spectrum. I found that out when playing with a RTL SDR. Continuously plugging and unplugging the power brick while tuning into an FM band
IKEA Tradfri gateway uses the coap protocol. There are client that allow programming your bulbs.