Device control method, display control method, and purchase settlement method

A device control method, comprising:

• acquiring voice information;
• obtaining a spoken command indicating a control instruction as to a device based on the acquired voice information;
• identifying speaker information relating to a speaker which has uttered the acquired voice information, based on the acquired voice information;
• identifying, of a plurality of devices, a device to be controlled, based on the spoken command and the speaker information;
• and
• controlling the identified device to be controlled,
• wherein, in the identifying of the device to be controlled,
• a first table and a second table are referenced,
• the first table includes a plurality of pieces of speaker information, each piece of speaker information being associated with a plurality of candidate devices, which are controlled by a speaker corresponding to the associated piece of speaker information,
• the second table includes a plurality of spoken commands, each spoken command being associated with at least one candidate device, which is controlled based on the associated spoken command,
• a candidate device is selected as the device to be controlled, when the candidate device is associated with the identified speaker information in the first table, and the same candidate device is associated with the obtained spoken command in the second table.