There is nothing grey about it. Read it here: https://www.fcc.gov/general/jammer-enforcement https://www.fcc.gov/general/jammer-enforcement Federal law proh

There is nothing grey about it. Read it here: https://www.fcc.gov/general/jammer-enforcement https://www.fcc.gov/general/jammer-enforcement Federal law prohibits the operation, marketing, or sale of any type of jamming equipment, including devices that interfere with cellular and Personal Communication Services (PCS), police radar, Global Positioning Systems (GPS), and wireless networking services (Wi-Fi). If you use the device in this story to jam Wi-Fi you're a felon and the FCC will seize your equipment, bury you in fines and/or put you in prison. The "accepting interference" requirement does not immunize anyone from prosecution for jamming. Unlicensed != unregulated, and the FCC is perfectly capable of distinguishing between legitimate Part 15 operation and jamming.