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Fyre Starters: Meet the 15 Stars Whose (Undisclosed) #Spon Brought the FTC's Wrath on Instagram

Now that Fyre Festival co-founder Billy McFarland is charged with fraud, this is the perfect time to list off those top 15 influencers who promoted tickets to the disastrous event to their loyal followers, right?

How To: Detect When a Device Is Nearby with the ESP8266 Friend Detector

Smartphones and other Wi-Fi enabled devices send radio signals called probe frames to locate nearby wireless networks, which makes them easy to track by listening for their unique MAC address. To show how this kind of tracking works, we can program a NodeMCU in Arduino to sniff the air for packets from any device we want to track, turning on an LED when it's detected nearby.