Video data are transmitted to a receiver. The micro-market may supply snacks, candies, beverages, other food items and various convenience items such as toiletries for use by employees, workers and other during the work day, lunch and break time. The invention produces stable standard gas compositions having improved shelf-life. An intermediate plate has a friction surface of a non-magnetic material. Once the correct CRC value has been calculated, it is appended to a data segment, comprised of a group of data blocks, for transmission to another device.