A method for securing remote access to private networks includes a receiver intercepting from a data link layer a packet in a first plurality of packets destined for a first system on a private network. Each laser beam strip has a different linear polarization direction, and the advancing direction corresponds to a direction along which the workpiece is cut by the laser beam. Additionally, other sensors may be used to collect data relating to various operational parameters of the device including the amount of negative pressure presented under a vacuum dome or other parameters related to the operation of the medical appliance itself, as desired. The nucleic acid molecule of the detector fusion molecule is used as a tag, thus allowing for the detection and quantification of the target analyte. Therefore, it is not necessary to use an existing complex operation method. In a disclosed example method, a first signal is transmitted via a first device in a first direction to a second device and a second signal is transmitted via the first device in a second direction to a third device associated with a shopper.