IRREGULARITY PREVENTION DEVICE, METHOD OF CONTROLLING IRREGULARITY PREVENTION DEVICE, AND FISCAL PRINTER TO WHICH METHOD IS APPLIED

摘要

PROBLEM TO BE SOLVED: To prohibit an operation of electronic equipment when power is turned on in the case where there is the possibility of an irregularity having been done to an electronic component for recording secret data.SOLUTION: The irregularity prevention device includes: an electronic component recording a predetermined data; a case in which the electronic component is provided; a cover covering the case; a plurality of fixing members fixing the cover to the case; a plurality of sensors provided in the case and changing their states according to attachment and detachment of the plurality of fixing members; a controller detecting change of the states of the plurality of sensors; a predetermined order recorder recording a predetermined order for the change of the states of the plurality of sensors; and a detection order recorder recording the order in which the change of the states of the plurality of sensors are detected, in the detection order recorder, when the controller detects the change of the states of the plurality of sensors. The controller compares the predetermined order recorded in the predetermined order recorder with the order in which the change of the states of the plurality of sensors are detected, and which is recorded in the detection order recorder, and imposes a restriction on a predetermined operation of the electronic equipment when the orders are determined to be different.