I first heard about de Bruijn sequences [1] in a talk by Persi Diaconis. Among other things, he described the lock picking "use" listed first in the Wikipedia a

I first heard about de Bruijn sequences [1] in a talk by Persi Diaconis. Among other things, he described the lock picking "use" listed first in the Wikipedia article. They're such obviously cool objects, that I feel like they should be useful in all sorts of places. Sadly I've yet to find an excuse to use them myself though. [1] http://en.wikipedia.org/wiki/De_Bruijn_sequence http://en.wikipedia.org/wiki/De_Bruijn_sequence