Artificial intelligent assistant

door-plate

ˈdoor-plate
  A plate, usually of metal, on the door of a house or room, bearing the name, etc. of the resident.

1823 Spirit Pub. Jrnls. (1824) 94 Door plates of misters and dames. 1836–9 Dickens Sk. Boz (1850) 70/1 The brass door-plate. 1884 F. M. Crawford Rom. Singer I. 23 A marble door-plate, engraved in black with his name.

Oxford English Dictionary

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