A method and apparatus for an inspection cell that allows contact lenses to be presented in a known orientation to an operator or vision system for inspection. The tool may be embodied as a solid cylindrical insert, or a hollow cylindrical sleeve, or an expandable, segmented body. The combination method may also be used to dynamically identify events or conditions which are related to a plurality of entities. Each registration request includes a bit mask according to one of the prescribed aggregation levels. The security unit has a protrusion and a through hole corresponding to the slot of the socket, and the protrusion perpendicularly extends from the surface of the through hole, wherein the protrusion further has an insertion hole penetrating through a bottom of the protrusion.