Typically an 8- to 12-character alphanumeric code assigned by the manufacturer.
A code required for devices that transmit radio signals; searching this on the FCC ID Search website can reveal the manufacturer and internal hardware details. Where to Find the Numbers
Searching for an auto GPS tracker serial number is often the first step in solving a mystery, whether you’ve found a suspicious device in your car or are trying to reactivate a system for your own peace of mind. These unique identifiers—often referred to as , IMEIs , or Unit IDs —act as a digital fingerprint for the hardware. How to Identify and Look Up Your Tracker