| 摘要 |
<p>A disclosed process synchronous proving system includes: a holding part configured to hold a determination condition for a factor based on an action, which factor is difficult to obtain by anyone except for a valid user; a detection part configured to detect the factor; a determination part configured to determine whether the determination condition is satisfied by the factor that is detected; and a providing part configured to provide proving information according to a result of determination by the determination part.</p> |
