A reading device for reading an interface surface provided on a product item, the interface surface having disposed thereon coded data. The reading device includes: a harness which is configured to tight fittingly receive at least a portion of a user's hand; a housing coupled to the harness, the housing including a void configured to tight fittingly receive therewithin a finger tip portion of a finger of the user's hand received within the harness, the housing including an aperture in a wall of the housing which is located, in use, adjacent the underside of the finger tip portion of the finger; a sensor provided in the housing for sensing at least some of the coded data through the aperture; and a processor for decoding at least some of the sensed coded data.