Distinguish motion towards door from motion along street

Please, please, please, make the motion detecting software smart enough to distinguish motion along the street— say joggers or dog walkers— from motion toward the doorbell. XXXX% of the alerts I get are of 0 interest to me! If the software can tell a car from a person, surely it can tell which way a person is moving.Motion zones will absolutely not work for me, as the lines of site are the same no matter what someone is doing.