Processing device and processing method

Abstract

Safety is increased in a more appropriate manner. The processing device 13 is a processing device 13 that detects an object (child P1) being left behind in a vehicle 1, comprising an assessment part that evaluates whether or not the object has been left behind, and a control part that executes a notification control, whereby a notification is sent to a user (supervisor P2) when the assessment part has evaluated that the object has been left behind, wherein the control part executes the notification control based on hazard level information, which represents information about the hazard level of the object.