A subject discriminating apparatus discriminates a subject having an unevenness pattern on a surface of the subject. According to the invention, the receptacle comprises a force transfer region that is arranged between the key unit and the switch element such that the interior of the housing is protected from the outer region. The surface may be positionable, during use, with reference to the display device. A filter with controllable tilt may be employed to compensate for amplifier gain tilt and assure that all of the WDM channels remain within the dynamic range of the photodetector and receiver electronics. The leaf members are not directly linked to each other to provide for off-axis movement of the surgical object. When the display of the handheld device shows that the e-ticket information is read by the ticket checking device and is verified by the database, the ticket service center transmits an e-ticket verification information to the handheld device, and the display of the handheld device then shows the e-ticket information for the ticket checking device to check again.