An ID-POS information generation server communicates with a POS terminal installed in a predetermined facility and a user terminal carried by a user in the facility, and includes: a POS installation information storage; a user information storage; and a hardware processor. The hardware processor: obtains POS information and stores the POS information in a POS history information storage; obtains activity information and stores the activity information in an activity history information storage; and generates ID-POS information by identifying the user identification information corresponding to the POS information and adding the identified user identification information to the POS information, based on the POS installation position information and the date and time information corresponding to the POS terminal identification information included in the POS information and the user position information and the date and time information included in the activity information.