Well that raises a question in my "punkin' head".....
When they say "fingerprint"............
are they saying...."this radio is a 1979 Cobra 148 from Taiwan"?????
or are they saying.... "this is the same radio that was transmitting 2 days 3 hours and 42 seconds ago on this frequency"????
It is easier to believe that they could match the "dynamic appearance of the signal" across multiple transmissions.... than to believe that they can tell you the "make, model and serial number" of the radio you are using.
The correct answer is this
or are they saying.... "this is the same radio that was transmitting 2 days 3 hours and 42 seconds ago on this frequency"????
Nobody anywhere is expecting that a TX fingerprint can tell you everything down to practically the serial number. The entire idea is to identify a particular signal as being the one monitored earlier. The data can be used to positively locate a transmitter that has been in use. The most common reason for this is interference complaints. It also has military uses as well. How many times have we heard that a "person of interest" was taken out by an air strike after he was tracked because of the phone or radio he was using?