Wow, a new technique to resist ripping . . . No big deal but I found it interesting. I was just going to convert a copy of the Star Trek DVD that I purchased (Best Buy) for my personal use on my iPad. First, I did a little research and found that they have about 99 titles on this DVD, and the correct one to rip was supposed to be #21. It seems that the manufacturer also found out about this information, and when I tried load the disc into a converter program (I tried my copy of iSkysoft and also Wondershare) there was a series of titles to choose from, but they were not simply sequential numbers. To make it worse, the titles are different in iSkysoft and Wondershare!) Again, no big deal but I did find it an interesting technique.