Robotics are increasingly being used in the apparel industry. Sewing robots can produce garments like t-shirts twice as fast as human workers and require only one operator for multiple robot sewing lines. They are more accurate than humans, with machine vision allowing them to track and place threads within half a millimeter. While robots may replace many textile jobs in developing countries, companies argue they help keep manufacturing local and allow workers to focus on more complex garments. The increased automation also leads to higher overall production volumes.