Brief description
Richard has help from Steve to access the MoveScan database in order to find out who the mystery man from Richard's apartment is - who visited Richard's wife before she went missing. The recording is from Simon, a housebot. It's called a "video comparison", in effect a gait analysis. Richard and Steve also acquire data on voice and police records to find the right person. As shown in the database picture, the MoveScan analysis hands, head, shoulders, knees, and feet movement to determine if it's a matching movement motion or not.