Abstract: Apparatus and systems, as well as methods and articles, may operate to provide a locating system to obtain location data for a device in order to determine whether that device is within a defined perimeter.

Abstract: A hunter's tree stand (10) comprising a planar seat member (16) of generally rectilinear form having a pair of opposed generally V-shaped notches (18, 19) formed in its opposite ends which are adapted to engage and partially surround, in intimate face-to-face relation, the facing portions of a pair of diverging tree branches (14, 15) at the fork (11) formed thereby, a sharp, laterally projecting V-shaped metal knife-like edge (20) secured to the undersurface of the seat member (16) in juxtaposition to and projecting laterally from the first V-shaped notch (18), and an L-shaped bracket (22) releasably secured to the undersurface of the seat member (16) by means of one or more bolt and nut combinations (29, 31) for permitting lateral extension of said L-shaped bracket (22) relative to the second of the V-shaped notches (19) to permit the depending bracket leg (25) to be placed in face-to-face contact with the other of the diverging branches (14) and positively secured thereto by one or more threaded fasteners (