Identification tag management system

A method comprising:

• loading a first identification tag into a printer;
• accessing a first print file comprising a first map of volumes of dielectric material arranged within the first identification tag;
• fabricating volumes of dielectric material, proximal a first target resonator within the first identification tag, according to the first print file;
• broadcasting a first interrogation signal over a frequency band via a detector;
• receiving a first response signal passively broadcast by the first identification tag responsive to excitation of the first target resonator by the first interrogation signal;
• deriving a first set of radio frequency signal characteristics of the first response signal of the first identification tag;
• accessing a first tag identifier for the first identification tag;
• and
• storing the first tag identifier, in association with the first set of radio frequency signal characteristics, in a tag database.

A system comprising:

• an identification tag:
• configured to integrate with an object;
• and
• comprising:
• a substrate;
• a target resonator:
• arranged on the substrate;
• characterized by a baseline resonant frequency;
• and
• configured to broadcast a target response signal responsive to excitation by an interrogation signal;
• and
• a set of volumes of a dielectric material:
• arranged on the substrate proximal the target resonator;
• and
• configured to shift a resonant frequency of the target response signal, broadcast by the target resonator responsive to excitation by the interrogation signal, from the baseline resonant frequency by a target frequency difference that encodes an identification value of the identification tag.