An OCT probe has a sheath to be inserted into a subject; and an optical system within the sheath, for changing the direction of light which propagates from a light source through an optical fiber to irradiate the light onto the subject through a transparent portion of the sheath, and for reflecting the light beam, which is reflected by the subject, to guide the light into the optical fiber. The compliant support assembly includes a first cantilevered beam cantilevered to the lower engagement member, and a second cantilevered beam cantilevered to the first cantilevered beam. The total charge is then extrapolated from the data collection endpoint. The second data-transmitting section changes the order in which to transmit the auxiliary data items inserted in a program, in accordance with the new data assembled by the control section. The first transmission key is communicated to the first personalization server without being communicated to another personalization server such that the first server can decrypt the first block using the first transmission key to access the keys of the first block.