A vibration damping device including a hollow housing having a fastening frame and a housing main body attached to the fastening frame for providing the hollow housing enclosing a mass member. In addition, foldable transaction card systems are provided, whereby transaction cards, having the internal hinge material, are provided within housings, cases or carriers. The inner cover is located at a region of the waste toner storage unit that does not store waste toner. The selector includes an event switch which is activated by the patient after taking a dose of medication so as to record the taking of medication and to cause the microcontroller to effect the display of the next time at which a dose of medication is to be taken. The device may be adhered to the skin or clothing of a patient and may ensure alignment between an external coil and an internal coil to provide optimal energy transfer in a TET system. In one embodiment, the biocidal intermediate is a halogen-based biocidal intermediate, such as chlorine dioxide.