Meaconing is a tricky word that describes a very sneaky way of messing with things called GPS (Global Positioning System) signals.
Imagine you are playing hide and seek with your friends, and you all have walkie-talkies to communicate with each other. Your friend who is hiding doesn't want to be found, so he does something sneaky: he makes a fake voice on the walkie-talkie to trick you into thinking he is in a different spot than he really is. This is kind of like what meaconing does, but with GPS signals instead of walkie-talkies.
GPS signals are like little messages that your phone or car uses to find out where it is. But sometimes, bad guys can make fake GPS signals to mess with what you think is your location. These fake signals are like fake messages that trick your phone or car into thinking you're somewhere you're not. For example, if you wanted to go to the park, the sneaky meaconer might make your GPS think the park is actually a different place, like a big building or the middle of the ocean! This can create all sorts of problems, like making you go the wrong way or making your location look strange.
Thankfully, there are people whose job it is to protect GPS signals from meaconing and other types of interference. They work hard to keep our GPS accurate and safe, so we can always find our way and know where we are!