A collection system using a computer or smart device system wherein the collection items (or more specifically their unlocking keys) are contained in various floppy disks and/or an optical storage drive and/or are obtainable through a network connection. With the collection items in the computer or smart...http://www.google.com.au/patents/US6061656?utm_source=gb-gplus-sharePatent US6061656 - Computer-based trading card system and method
