User blog comment:Sosuke Aizen008/Best part of Chapter 552/@comment-5147109-20131005183109/@comment-11446176-20131007054231

If it was Nimaiya who came up with the solution, I'd agree with you. But seeing as how Urahara did (and he did do some research on a medallion) I think its more likely that it will be some technically explainable thing.