Abstract: A control method by a computer, the control method acquires work information including information on work performed by a robot arm and information on an article as a target of the work; causes the robot arm to perform an operation of lifting up a predetermined unit of articles based on the work information; determines that there is a possibility that a plurality of articles are packaged together based on sensor data obtained when the operation is being performed; and when it is determined that there is a possibility that a plurality of articles are packaged together, settles a handling method for the article according to the sensor data.

Abstract: A control method includes: acquiring article information including a price of an article to be handled by a robot arm; deciding, based on the article information, a handling method of the article to be handled by the robot arm as a handling method in which as the price of the article is higher, damage prevention of the article is more prioritized; and controlling the robot arm that handles the article based on the handling method.