Methods using a probe apparatus configured to measure a set of electrical characteristics in a plasma include providing a chamber wall including at least a set of plasma chamber surfaces configured to be exposed to a plasma, the plasma having a set of electrical characteristics. The MRL layer is technology independent and uses the information received from the underlying technologies to select the most appropriate uplink and downlink technologies to match the respective service requirements. The user can then remove the glove and the first insert, and insert the user’s hand into the interior of a second of the plurality of inserts, followed by inserting the hand section of the second insert inside the interior of the glove, with the border section of the second insert extending outside the glove. In the event the sampling data and the fixed location are within boundary limits, the processor may actuate an access control to permit the subject to enter or exit a controlled premises. The entire apparatus is made compact without decreasing a recording medium feeding performance and a printing process capability by that a plurality of processing units serving for the printing processes and recording medium feed path linking those units are arranged reasonably. The backward movement indicator apparatus comprises an image capture device arranged to capture image data which is representative of objects in vicinity of the vehicle.