A ship’s Stellar Navigation Transponder (or, SNT — pronounced “scent”) is a harmonic-processing astrolabe built into most modern ships’ navigation system. Using continuous sensor frequencies (both active and passive), an SNT sends a signal to beacons established throughout the ‘Verse that are designed to bounce a stellar-metric positioning signal back to the ship. The two signals, processed within the hardware’s core, create a time-stamped telemetry verifying the ship’s position within the ‘Verse. For obvious reasons, this signal is designed to be unique and separate from signals created by a ship’s CommSat or Cortex node for safety and redundancy.
Since every SNT has an individualized transmission source, the signal is often associated with — and considered to be — a ship’s signature or fingerprint. The signature can then be used to identify a ship’s registration and additional information.
Ship’s registered through UAP member-worlds are required to have a functioning SNT. Strict fines often result if the hardware is deemed unsuitable. Elsewhere in the ‘Verse, ship’s are allowed to fly with or without the hardware, however, most ship yards suggest their buyers purchase one… for obvious reasons.