You are wondering about spectral analysis. Any electromagnetic emission can be analyzed for its spectrum and classified. Such analysis can discern between individual radiators. The math, physics and engineering to be able to do so is decades old. Signature analysis can identify, for instance, individual radio transmitters. It is my considered opinion that, with enough data, individual humans could be identified by their electrical emissions. Physics, however still subjects all emissions to the inverse square law.
Can the technology detect a specific heartbeat that creates a specific electromagnetic signal that is exclusive to the person's heart being tracked?
You are wondering about spectral analysis. Any electromagnetic emission can be analyzed for its spectrum and classified. Such analysis can discern between individual radiators. The math, physics and engineering to be able to do so is decades old. Signature analysis can identify, for instance, individual radio transmitters. It is my considered opinion that, with enough data, individual humans could be identified by their electrical emissions. Physics, however still subjects all emissions to the inverse square law.
How about one with the vaccine?