A bandage which may be used to cover, protect and promote the healing of wounds, lacerations and the like on the skin of a human or animal allergic or sensitive to latex. The flow channel includes a first flow channel defined above the surface of the substrate on which the pressure-generating element is disposed and a second flow channel defined on the substrate down to below the surface on which the pressure-generating element is disposed. \u201d Channel bonding allows smaller bandwidth upstream channels to be bonded together to create a larger bandwidth pipe. This is particularly useful in applications where it is desired to direct stimulation to the die from an external source and to also externally detect a response of the die to the stimulation. In addition to profiling the undercarriage of a vehicle and comparing it to an expected configuration of a like vehicle, the system may be used for such diverse applications as determination of correct toll at toll booths, quality inspection in an assembly line, safety and security inspections, and access control. A transfer device is provided connected to the computer system that receives the information regarding the registrant’s desired gifts from the portable input and storage device and transfers the information to the computer system.