US Patent 12017851 Storage cabinet

A refrigerator is an example of a storage cabinet, and includes a door sensor, a weight sensor, a wireless tag reader, a memory, and a microcomputer. The microcomputer identifies an ID that is not readable by the wireless tag reader after a timing at which a weight increase is detected by the weight sensor in a first period, as an ID of a newly loaded food item, the first period being a period from when a door is opened to when the door is closed that is determined based on a result of detection performed by the door sensor, and adds the identified ID to registration information that is stored in the memory.