A bidirectional switch for switching an A. The system includes a mobile device comprising an electronic wallet and smart card applications. Further, a segmentation device is provided for segmenting the sequence of information into individually accessible segments, each corresponding to a respective information item, in response to segmentation data indicating end limits of the information items. One of the plurality of quantum wells and the plurality of barriers is comprised of tensile strained layers and the other of the plurality of quantum wells and the plurality of barriers is comprised of compressively strained layers. The first and the second networked software application parts remain on the first computer resource, and separate from the client computer, during the forming of the second networked software application part. 85 to the same light, and which contains no alkali metal oxide or contains alkali metal oxides in a total amount of at most 15 mol %.