Two TARDISes can phase into (or materialize inside) one another, but they have to be operating on the same frequency. The frequency is adjusted using the Time Sensor Control. The Time Sensor Control fine-tunes the exact space-time coordinates of the atoms that make up a TARDIS. It also ensures the proper time setting, which must be within 1 x 10-9 nano-seconds. If the time setting is too low the TARDISes will go flying off in opposite directions. If it's too high, then Time Ram occurs.[/ttv] For this reason performing TARDIS Interlock violates 15,473 different Laws of Time. If one TARDIS has no shields then the other ship must lower their shields for Interlock to occur. If someone or something happens to be standing in the space where a TARDIS is phasing into during interlock the person or object will be atomized.
When two TARDISes are successfully Interlocked, they will appear to be inside each other. This can cause a Gravity Bubble by increasing the weak force flux beyond design limits. A Gravity Bubble will trap a TARDIS at its current Space-Time Coordinates. If the operators of both timeships work together the capsules can be separated without danger of damage. But without the help of the other Time Lord a significant power boost to the drive systems is necessary to escape the Bubble. It should be noted that prior reconfiguration of the Architectural Configuration Program can prevent Gravity bubbles (see Environmental Systems).
TARDIS Interlock can be used to capture and tow a more primitive TARDIS. Under such circumstances the only way to escape is for the captured TARDIS to reverse the time vector drive. The back surge will break the two ships apart. Such an action can tear a rift in the Vortex and also runs the risk of draining the transpower system to the point were it needs to be jump started to access the Eye of Harmony.
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.