Convert the code to a numbering using modulo arithmetic. Take a movie file, and encode black frames for a full minute for every number in your set. Burn the mov

Convert the code to a numbering using modulo arithmetic. Take a movie file, and encode black frames for a full minute for every number in your set. Burn the movie to a DVD and add it to your household collection. If you need to recover the recovery code, watch the movie with a notepad handy.