I am in no way condoning the use of these spoofers and yes there are laws that make any interference with a Gov service Illegal but so far the community has been testing these devices out ( in no way maliciously) and not one Govt. Entity has expressed concern or even interest in there development ( There are many videos and websites out there where you can legally acquire the coding and setup advice. This would not be true of any other device that "causes Havoc" to the Air traffic system or any device that could actually "fool" Law enforcement. I see no really good reason for the device as much as I see no good reason to offer a pilot finder to any unhinged person out there. If law enforcement wants to find me. Welcome ! I'm easy to find I will even wave BUT for Billy and his shotgun looking to exact retribution for the crime of flying a drone, I would prefer that it be a little harder for him to confront me!!