Sorry for the mislead. I admit that my unhappy choice of the term "origami" to quickly describe the carts is giving me headaches on internet. I thought that the

Sorry for the mislead. I admit that my unhappy choice of the term "origami" to quickly describe the carts is giving me headaches on internet. I thought that the "generally discourage the use of cuts, glue, or markings on the paper" of Wikipedia could make me a little safe... but it's clearly not working :) Anyway encoding data with foldings is a whacky idea I like. Something that a villain could use to hide hints about his next move :)