A system includes a first crosswire array, having first input wiring and first output wiring, and a second crosswire array, having second input wiring and second output wiring, wherein the first crosswire array and second crosswire array are provided on or above the same side of a first substrate. Using the determined region of interest, the computing system instructs the camera to generate a peripheral region of one or more subsequent images having a reduced information intensity level relative to the information intensity level with which the region of interest of the one or more subsequent images are generated. Utilizing a scanning device for reading machine-readable medical markings, and a controller, there are additional means to check and double check the medical action before the actual medical action is performed. The combination of the polarization control and the active phase stabilization of the interferometer at Bob’s end allows for the stable operation of the interferometer when used as part of a one-way QKD system. This mechanism handles instances where the second queue is not able to handle all known packets. One end of the L-shaped antenna element is connected to the feed point and an opposite end of the L-shaped antenna has a helical shape.