16 with lens subassembly 20 optically aligned therewith to focus light from within a field of view 50 of the lens subassembly 20 onto the sensor array 25 array 25 collects the light that subtends the array and generates images of objects located within field of view 50 referring to fig1 and 3 in general when activation button 18 is pressed processor 29 causes array 25 to collect light and generate a plurality or consecutive images thereby forming a series of images that are examined by processor 29 to perform various functions referring yet again to fig2 and 3 structured light source 22 is light source that can be controlled to project any of a plurality of light patterns within the sensor 39 s field of view 50 in at least some embodiments light source 22 will include a digital light processing dlp projector which can be controlled to generate essentially any desired light pattern within fov 50 for instance one pattern that may be generated by light source 22 may include a single straight line that divides the field of view 50 into upper and lower halves other instances of projected patterns may include other single lines that divide the field of view 50 differently such as horizontal lines that are higher or lower than a central line within the field of view 50 vertical lines that divide the field of view 50 either evenly or unevenly or.