A position of a cursor may be detected within an augmented reality (AR) display of a physical space captured by a camera. A snapping range of a snap-select function of the cursor may be dynamically changed in response to the position of the cursor. Accordingly, a user may place or hold a camera in a location to view an associated AR display, and may easily and precisely execute a snap-select function to select a desired AR object, even when the AR display includes AR objects that are of different sizes, or are different distances from the camera.