That is a GPS module which every RID must have. There is also an esp32 processor on the bottom of the FT EZ ID.
You can easily make a RID spoofer with an esp32 that included Bluetooth 4 and 5. Blanket the sky with false locations of the pilot and/or UAS. It is a non-encrypyted protocol - and could simply use scraped and logged RID module numbers (remember, every time you power up a RID, your RID serial number is openly broadcast). It gives the old neighborhood “Wi-Fi war walking” practice a new target.
Not that I would do such a thing.
So, in essence, the FAA has setup a system that can be easily and very cheaply be used in a way that would be infinitely more disruptive to airspace. Seriously, imagine the 1980’s movie “War Games” but instead of ICBMs being faked, it is tens of thousands of drones.
They had an opportunity to confine us all below 400 AGL in Class G Airspace, knowing we would gladly comply, but instead they created a huge opportunity for malicious attacks. Short sighted and unimaginative.