A user contracts for service with an operations center in order to provide monitoring and tracking services for a plurality of devices. The gradient characteristic may comprise a plurality of texture gradient zones andor a plurality of color gradients. The apparatus includes a compensating roller that has a first end and a second end where the first end and second end extends a width of the belt. Also proposed is a control andor monitoring unit for implementing this method. Interactivity thus created can be used in training modules. The first Nylon layer and the second Nylon layer have different colors.