Beneath-the-Bell Security Number Pad

A rectangular number pad concealed beneath the worn bronze bell mounted on the Dark Tower's weathered stone facade. Its surface shows signs of prolonged exposure, the plastic keys stained from years of neglect yet retaining their tactile press points. The First Doctor's fingers move with practiced precision to tap a sequence on the numbered keys, revealing it as the first step in a series of actions that bypasses conventional entry protocols. The mechanism responds with only a low hum before the immense door begins its slow, groaning retreat.