Authentication system, mobile device, processing device, and non-transitory computer-readable medium

A mobile device adapted to be carried by a person to be authenticated, comprising:

• an acceleration sensor configured to output an acceleration signal corresponding to acceleration applied to the mobile device;
• and
• a processor configured to execute determination processing for determining whether the person is walking based on the acceleration signal, and to output a result of the determination processing to a control device configured to execute authentication processing for authenticating the person as a user of a controlled device,
• wherein in a case where same determinations as to whether the person is walking are made M times while the determination processing is repeated N times, the processor validates the determination;
• and
• wherein N is an integer that is no less than 2, and M is an integer that is no less than 2 and no more than N.

A processing device, comprising:

• a reception interface configured to accept an acceleration signal corresponding to acceleration applied to a mobile device adapted to be carried by a person to be authenticated from an acceleration sensor installed in the mobile device;
• and
• a processor configured to execute determination processing for determining whether the person is walking based on the acceleration signal, and to output a result of the determination processing to a control device configured to execute authentication processing for authenticating the person as a user of a controlled device,
• wherein in a case where same determinations as to whether the person is walking are made M times while the determination processing is repeated N times, the processor validates the determination;
• and
• wherein N is an integer that is no less than 2, and M is an integer that is no less than 2 and no more than N.

A non-transitory computer-readable medium having stored a computer program adapted to be executed by a processor of a processing device and configured to, when executed, cause the processing device to:

• accept an acceleration signal corresponding to acceleration applied to a mobile device adapted to be carried by a person to be authenticated from an acceleration sensor installed in the mobile device;
• execute determination processing for determining whether the person is walking based on the acceleration signal;
• and
• output a result of the determination processing to a control device configured to execute authentication processing for authenticating the person as a user of a controlled device,
• wherein in a case where same determinations as to whether the person is walking are made M times while the determination processing is repeated N times, the computer program cause the processing device to validate the determination;
• and
• wherein N is an integer that is no less than 2, and M is an integer that is no less than 2 and no more than N.