69. The system of claim 61 , wherein the tracked motion of the pointing device comprises any of planar motion and non-planar motion of the device in relation to a surface of the region.
61. A system for selectable input based on motion of a pointing device in relation to an region, comprising: means for tracking the motion of the pointing device in relation to the region; a determined device path, comprising a plurality of positions and corresponding times, based upon the tracked motion; a comparison of subsequent positions and corresponding times to path data; means for detecting subsequent positions that meet at least one threshold of a selected position along the determined device path, wherein the determined device path comprises at least two selected positions, wherein the threshold of a selected position within the region comprises any of starting the device path, looping the device path, changing direction of the device path, changing velocity of the device path, pausing motion in the device path, and ending the device path, and wherein the threshold of changing direction comprises any of a curve having an estimated radius that is less than a threshold geometry, a comparison of the device oath direction before and after a curve, a sharp cusp edge in the device path, and a comparison of oath direction before and after a cusp; means for determining which of the detected selected positions along the determined device path correspond to a selectable character; and means for sequential entry of each of the detected selected positions that correspond to a selectable character.