A setting apparatus sets any of authorization for and prohibition of access to data with a hierarchical structure. The segments have bearing pads at each end, each bearing pad surrounded by a shield wall. The elongate flexible shaft has a proximate end and a distal end. The method further includes generating a plurality of cross-sectional digital image groups, each group comprising at least two digital images of the plurality of cross-sectional digital images wherein each of the two digital images indicate the internal anatomy at a substantially similar respiratory state. Horizontal andor vertical paging speeds correspond to the number of moving contact points, which can be effected with swiping or circular gestures.