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Sonic pen

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Sonic pen
Sonicpen
Type: Multi-functional sonic device
Appearance: Partners in Crime

The sonic pen was a sleek black device used by Matron Cofelia/Miss Foster that functioned in a similar fashion to the Doctor's sonic screwdriver. The Tenth Doctor aquired it from Matron Cofelia by pointing his own sonic at it, causing the sonic pen to emit sparks and cause Cofelia significant pain.

In discussing the similarities and differences between the sonic pen and sonic screwdriver, the Tenth Doctor implied both were of similar manufacture. The sonic pen was able to open deadlock seals (but only ones it was coded to), while the Doctor's device remained ineffective against that precaution. When the Doctor put the ends of the functioning sonic pen and the sonic screwdriver near each other, they generated a feedback effect which stunned everyone in the vicinity. After the death of Cofelia, the Doctor threw the sonic pen into a bin. (TV: Partners in Crime)

Known uses Edit

  • Cutting cable
  • Activating the Adipose Inducer
  • Opening/disabling deadlock seals
  • Speeding up a window cleaner cart

Behind the scenes Edit

  • A toy replica of the sonic pen was released by Character Options in a two-pack with the Doctor's sonic screwdriver. Both now featured a non-ultra violet-blue LED and identical sound effects. A single button built into the clip would activate the light and sound effects, and twisting the casing of the pen would extend the ink tip. Compared with the prop that appeared on-screen, the toy features an added section around the emitter.

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