| 摘要 |
PROBLEM TO BE SOLVED: To control power without damaging convenience for a user and power saving properties, in a sleep mode.SOLUTION: A controller acquires, in a sleep mode, information on registered users having entered an office room from an entry and leaving management apparatus (S433). In a case where the number of registered users positioned in the office room is equal to or larger than a threshold, the controller switches to a first control mode of supplying power to either or both of a human body communication apparatus and an ID information reading apparatus for acquiring user authentication information (S438). In a case where the number is smaller than the threshold, the controller switches to a second control mode of supplying power to neither the human body communication apparatus nor the ID information reading apparatus (S439). |
