A system and method for employing a mechanism for unlocking a vehicle ECU. Multiple domains can be represented simultaneously, allowing multiple conceptual frameworkknowledge set pairs to be used in any combination so that products from their respective conceptual frameworks can be shared within and across domains. A PIN code is applied onto the opaque label strip. The extrusion can include a stiffening core of stiff first material and an extruded covering of a soft resilient foam second material surrounding the core, the thickness of the second material being less than half as great at the narrowed locations as at maximum diameter locations while the core is of uniform cross-section along the entire length of the extrusion. Focusing and detection optics collect and detect optical radiation. A timing of the accumulating operation of the imaging device is delayed depending on the lengths of the fibers.