Failsafe control circuit for electrical appliances whereby at least one electrical load is activated, the control circuit comprising logic control means, operation switching means between said electrical load and a supply voltage, and a first drive circuit which receives a first command signal from the logic control means, said first drive circuit acting on said operation switching means. The at least one image sensor is configured to consecutively capture a plurality of images at a predetermined rate. Embodiments of the invention also include a positioning system that determines the physical location of the mobile unit and uses the information to route signals to the unit. The process may be automated in terms of the creation of image representations andor single or multivariate analysis. The first portions are spaced by the second portions. The polyesters may be manufactured into articles such as fibers, films, bottles or sheets.