Warning: Add These 6 Characters to Your Wi-Fi Network Name Immediately

Your phone is secretly broadcasting your network's unique ID. Type these six characters into your router settings to go off the grid. Your smartphone remembers every Wi-Fi network it has joined. As you move through the world, it listens for available Wi-Fi nodes with an eye to reconnecting with known sources. At any time, you can peek into settings and see all the networks around you. But…