Locks for logophiles

How cool is this!  Much more palatable than memorizing a batch of numbers.  Finally, there's hope for the rest of us non-number crunching folks to have an meaningful lock for our bikes, or just to ponder  symbolically.  (Keys, puzzles, locks, I love what they've come to represent.) 

I hope there are a lot of qs, xs and zs in the mix.