A method includes obtaining image data associated with a specified area having one or more objects. Some embodiments include a radiation source and a combination of members surrounding the radiation source that move relative to one another to permit or restrict the emitting of radiation from the device. The first substrate has a first circuit layer disposed on a surface thereof. The first module element is biased with a first current directed along a direction such that magnetically stable operation of the element results, that is along an opposite second direction.