Ad blocker interference detected!
Wikia is a free-to-use site that makes money from advertising. We have a modified experience for viewers using ad blockers
Wikia is not accessible if you’ve made further modifications. Remove the custom ad blocker rule(s) and the page will load as expected.
A deadlock seal was a form of lock or a device added to a lock that was almost impregnable. It was more secure than most locks. The Doctor's sonic screwdriver could not open regular deadlock seals, (TV: Bad Wolf) but these locks could be keyed to specific sonic devices, as Matron Cofelia did with her sonic pen. (TV: Partners in Crime)
Deadlocking made locks more difficult to open, at least with sonic devices. More sonic devices could be used in concert to break deadlock seals. (TV: Partners in Crime) Additional deadlocking could be applied, from double (TV: Voyage of the Damned) to triple. (TV: Partners in Crime, GAME: TARDIS)
It was possible to create deadlock seals with a sonic device. The Doctor "locked" several things during his travels, particularly the controls of his TARDIS, which even the Master could not unlock. (TV: 42, Utopia, The Sound of Drums, Last of the Time Lords, Invasion of the Bane)
Deadlocking did not make glass unbreakable. (TV: The Poison Sky) It did, however, make metal incapable of being melted, or at least heated, and could prevent cords and doors from being separated or opened physically. (TV: The Time of Angels)
Adipose Industries Headquarters could be deadlocked, including the doors and windows. The deadlocks there could be activated remotely on command. The Inducer built into the building was said to be triple deadlocked. However, the Doctor was able to open these locks after acquiring the sonic pen of the owner of the building, Miss Foster. (TV: Partners in Crime)
The lock for the cashier's office in a 21st century theatre had a deadlock seal. The Eleventh Doctor found this improbable, considering the technology level of Earth and such an unnecessary need for security. (PROSE: Snowfall)
River Song asked Flemming to deadlock the baggage hold of the Harmony and Redemption containing the Doctor's TARDIS and the body of her husband Hydroflax. According to her, only a genius could escape from it. (TV: The Husbands of River Song)