What special kind of personal identification, beyond normal body features, is needed to prove someone is a real traveler from another dimension, not a copy or shapeshifter?

The special kind of personal identification needed to prove someone is a real traveler from another dimension, not a copy or shapeshifter, is a unique quantum-dimensional signature. This signature is an intrinsic, non-physical characteristic, a fundamental energetic or subatomic pattern embedded within the individual's core being, directly linked to the unique physical laws and energy constants of their original dimension. Unlike conventional biometrics such as fingerprints, retinal patterns, or DNA, whic....