Various schemes for performing inter-system handoff, e. The connecting element has two coupling halves that can be interconnected by jointing and can be fixed to components or subassemblies to be connected by fixing means. An AD converter converts an analog signal supplied from the line sensor to a digital signal, a processing unit calculates the amount of movement of the object on the basis of movement of a pixel interval of the granular speck pattern. A filter is prepared from the treated filter media. The present invention further relates to a method of making a redirected T cell expressing a chimeric T cell receptor by electroporation using naked DNA encoding the receptor.