SYSTEM, INFORMATION PROCESSING APPARATUS, METHOD, AND COMPUTER-READABLE MEDIUM

A skeleton information acquisition means analyzes an in-vehicle video acquired from a camera that captures an image of a vehicle interior of a moving object, and acquires skeleton information of each of one or more passengers boarding on the moving object. A holding determination means determines whether the passenger is holding a pole, based on skeleton information of the passenger and a position of the pole in the moving object. An alert output means outputs an alert when it is determined that the passenger is not holding the pole.