The sensor is looking for a minimum Swing Speed of 30mph.  Since most chips and pitches have Swing Speeds under 30mph, they do not get captured.  Since bunker shots require more speed than chips, most bunker shots get captured.  The sensor generally captures wedge shots longer than approximately 40 yards since they have sufficient Swing Speed.  We hope to tune the algorithm to support chipping and finesse wedges in the near future.