The preferred embodiment of the present invention comprises a single microprocessor-based interface that connects between a noninvasive blood pressure sensor and an invasive blood pressure monitor or module. An attempted intrusion, causing a pressure reduction in one of the cavities, creates a pressure difference that breaks the membrane and makes the chip inoperable. The inner side surface 6h is inclined to depart from a virtual cylindrical side surface towards the direction opposite to the rotational direction of the body 2. If the assembly match information changes, update information of the remote database can be transmitted via the communication equipment to a readwrite device to update assembly match information in tags on components. The thickness of the metal reflection film is within the range of 5 to 50 nm.