Gallifrey Citadel Computer Room Handprint Reader

Security terminal component used for biometric authentication and access override procedures in the Citadel's Matrix control systems.

3 appearances

Appearances in the Narrative

When this object appears and how it's used

3 moments

S20E3 · Arc of Infinity Part 3

Castellan brands Doctor traitor with forged evidence

The handprint reader on the Computer Room terminal authenticates the Castellan’s identity to decode the fabricated printout, enabling a procedure that weaponizes institutional trust against an innocent party while leaving forensic residue of the moment’s struggle.

Before: Charged and responsive, awaiting authorized print.

After: Smudged with biometric traces from the Castellan’s pressure, correctly logged but misapplied to malice.

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S20E3 · Arc of Infinity Part 3

Castellan orders Matrix purge conference

The handprint reader decodes Damon’s smuggled data, certifying the contested printout as formally validated by the Castellan’s biometric authority. Its beep confirms institutional acceptance of the doctored evidence, transforming a fragile conspiracy into ostensible forensic truth.

Before: Functional and active under Damon’s prior attempt, now receptive to Castellan’s override

After: Successfully decoded the printout; smudges remain around the scanner edges

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S20E3 · Arc of Infinity Part 3

Damon locks the group in computer room

The Citadel’s handprint reader glows blue when Damon presses it, overriding the Castellan’s lock command—but his withdrawal leaves the system locked when the Castellan exits. The smudged residue around the chrome housing records the brief but pivotal struggle that entraps them in the security hub.

Before: Glowing steadily blue, awaiting authorized biometric input

After: Engaged by the Castellan’s lock command, trapping Damon and Nyssa inside; the surface retains smudge marks from Damon’s failed override attempt

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