The device for piercing film bags includes a piercing spike and means for preventing unintentional piercing by the piercing spike, the means for preventing unintentional piercing comprising a bag support plate that is connected to a baseplate by collapsible or tearable spacers. The exemplary method further includes steps of creating a volume adjusted master stream for each of the plurality of users by modifying the master stream with the decompositor stream for said each of the plurality of users. The inner container defines an upper wall portion and is located within the outer container. A video object produced by the software application is mapped to a segment in the video display screen that corresponds to the profile. Information is supplied from the computer to the electronic devices and from the electronic devices to the computer through the hub, thus avoiding the complexity of connecting devices when a USB is used.