Quantum Signature
From Star Trek : Freedom's Wiki
A Quantum Signature is defined as the frequency of the subatomic particles of an object, material or energy form. thus each item has a unique Quantum Signature, although all things from the same Quantum Universe or Dimension, share the same Quantum Harmonic.
This Signature can be used to determine the universe of origin of a person or object. Very large objects such as the Planet Iradon produces it's own Quantum state which is capable of opening a cyclic Interdimensional Rift, which causes the planet to appear in this universe from it's native universe approximately once every 1,000 years.