Information processing system, information processing method, and non-transitory recording medium

1. An information processing system comprising:

a first radio tag storing unique tag identification information, the first radio tag configured to be attached to a seating surface or a backrest surface of a seating unit; and

an information processing device comprising:

a storage that stores information on a user of a seating unit and tag identification information of a radio tag attached to a seating unit, in an associated manner, and

a processor configured to:

acquire the tag identification information when the first radio tag transmits a signal containing the tag identification information, and

determine whether the user is seated on the seating unit, based on acquisition or non-acquisition of the tag identification information.

2. The information processing system according to claim 1 , wherein the processor is configured to determine that the tag identification information is acquired, when the number of times of receiving the tag identification information within a predetermined time is a predetermined value or greater.

3. The information processing system according to claim 1 , wherein the first radio tag is configured to operate by obtaining energy from surrounding radio waves.

4. The information processing system according to claim 1 , wherein the first radio tag includes a sensor that measures temperature, and the processor is configured to determine whether the user has been seated on the seating unit, based on measurement information of the sensor.

5. The information processing system according to claim 4 , further comprising a second radio tag including a sensor that measures temperature and storing unique tag identification information, the second radio tag configured to be attached to the seating unit at a position so as to not come close to the user,

wherein the processor is configured to determine that the user has been seated on the seating unit, when a temperature measured by the first radio tag is higher than a temperature measured by the second radio tag.

6. An information processing method for processing information between a radio tag and an information processing device,

the radio tag storing unique tag identification information, the radio tag configured to be attached to a seating surface or a backrest surface of a seating unit,

the information processing device comprising a storage that stores information on a user of a seating unit and tag identification information of a radio tag attached to the seating unit, in an associated manner,

the method comprising:

transmitting, by the radio tag, a signal containing the tag identification information; and

determining, by the information processing device, whether the user is seated on the seating unit, based on acquisition or non-acquisition of the tag identification information contained in the signal transmitted by the radio tag.

7. A non-transitory recording medium containing a program, the program configured to, when installed in an information processing device, cause a computer to execute a predetermined method, the information processing device configured to process information contained in a signal transmitted by a radio tag, the radio tag storing unique tag identification information, the radio tag configured to be attached to a seating surface or a backrest surface of a seating unit, the method comprising:

an acquisition step of acquiring tag identification information when the radio tag transmits a signal containing the tag identification information; and

a determination step of, when tag identification information is acquired in the acquisition step, determining that a user corresponding to tag identification information acquired in the acquisition step is seated on the seating unit, by referring to a storage that stores information on a user of a seating unit and tag identification information of a radio tag attached to the seating unit, in an associated manner.