Hand-held electronic 'eraser' device

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According to Senior librarian Ms Millicent Davies, the Ninth Doctor used a "hand-held electronic 'eraser' device" to remove entire paragraphs from various biographies kept in the York Central Library and replace them with his own scribbles. (PROSE: Have You Seen This Man?)

Behind the scenes[[edit] | [edit source]]

It is not clear if this device was meant to be a description of the Doctor's sonic screwdriver from someone unfamiliar with said device or a unique device.