A coworker pointed me to a recent improvement in digital compression which the researcher said was based on a synergy of two magic tricks.
One of the effects was based on a binary De Bruijn cycle. (think of a memorized deck where you have arranged the colors so that each possible combination of red & black for six cards appears no more than once). If you have the deck memorized, then someone can remove six cards, tell you the colors, you would be able to tell them the suit and value.
A mathematician in Chile combined De Bruijn cycle with another mathmagic principle to improve compression ratios over current standards (i.e. Make your mp3 files, or .zip files, smaller than they are now)
If you are interested, the article can be found here: http://www.technologyreview.com/blog/arxiv/
The reason I am posting this is I would like to know if there are any other effects using a De Bruijn cycle? If you know of any could you post the effect and where I can find it?