Novel C3bC4b CR-like polypeptides and nucleic acid molecules encoding the same. The bottom edge portion of an opening portion in a rear frame is formed to be located below the bottommost end portion of the V-shaped tip of this movable blade by a predetermined height when the movable blade is located at the lowest point, that is, a home position. The child product is generated and may be used for payment transactions within the use restrictions defined by the control parameters. The base part has a grip cutout which is open toward the rear side of the base part and which is delimited toward the top by a ceiling wall extending at a distance from the positioning surface and toward the front by a transverse wall.