(aka Trimonic Cypher-Indent Key)
This key "unlocks" the double-curtain trimonic barrier that protects the Main Doors using its unique complex transdimensional crystalline molecular coding. The Key must be inserted into the Locking Mechanism to open the Dimensional Gateway. The key will vibrate when near the key-hole/sensor-plate.
The Key is isomorphic and uses beta waves to detect the metabolism, body pattern, and molecular structure of the person holding it to sees if it fits with a TARDIS's Approved Entrance File. This list can be updated and changed using the Control Console. The operator can desensitize a key to work for anyone by holding it against his head and sending the right telepathic command. If the Time Lord Operator dies, then the key becomes owner-neutral and will work for anyone.
If the operator desires, a secret compartment can created in the outer Shell of a TARDIS to hold a spare key. Duplicate Keys for all TARDISes can be found on Gallifrey, but it is possible, with difficulty, to construct a new key in a TARDIS Workshop. Duplicating a key takes about eight hours and the technician must ensure the new key is correct even down to atomic levels. The key can[/ttv] be constructed to replicate the appearance of any object or material. Once built, the Key can even morph its appearance into different shapes. Some versions have the Constellation of Kasterborus inscribed on the back.
If the DITO system has been pre-set the operator can use the TARDIS Key to trigger it. TARDIS keys are largely the same and it is possible to "pick" a TARDIS locking mechanism by modifying an incorrect Trimonic Key with small drops of telepathically programmed mercury.
Because the key is sensitized to its TARDIS it will glow and grow very hot when the TARDIS is about to materialize nearby. The TARDIS can signal the crew that an Architectural Reconfiguration has been completed by making the key glow.
It is possible to modify the key to track the location of its TARDIS if the ship is within 100 years of the key's location. A TARDIS key can even be used to track a missing crew members who have been processed by the PAST. A saline solution with a sample of crew member's blood must be prepared and then used to coat the key. The residual artron energy of the key will oxidise the blood. The key can then be suspended in a bottle of clear oil. Position of the key and the alignment of the oxidized blood particles can be used to calculate the rough direction and distance to the lost travelling companion.
A portable high-level Perception Filter can be built using a TARDIS Key, and parts from a laptop and a cell phone. However it won't work on all Time Lords.
The following color code is used:
- Black: For information from the TV Series, including Dimensions in Time, and 1996 TV Movie.
- Blue: For information from the Novels and Audios including Target, Virgin, BCC, and Big Finish.
- Green: For information from 'licensed' reference sources such as the Technical Manual, Doctor Who Magazine, and the Role Playing Games.
- Red: For information from unofficial sources -The Faction Paradox series, behind the scenes interviews, author's speculation, and popular fan belief.
The TARDIS Technical Index is copyright Will B Swift.