I started teaching about spread sheets with libreoffice, When exporting the file from wigle to CSV format, you'll get a spread sheet from your wardriving session. Wardriving can help map free or open wifi networks. The thumbnail is pretty much what you'll see if you check out my wardriving map, this makes the thumbnail truthful clickbait.
With a phone, you could scan WiFi, Bluetooth & cellular. This is helpful for demonstrating how ICE may track protesters using their Bluetooth or WiFi. I've went out on Sunday & mapped bluetooth signals of those who attended the Reno antique fair, you can see them on my website as a green X.
