Analysis of information sources in references of the Wikipedia article "Julius and Agnes Zancig" in English language version.
This is the basic two-person verbal code as it was used over 100 years ago. Like most routines of this nature, one person (generally a man) interacts with the audience and the other sits on stage, blindfolded (generally a woman). The man walks around and "asks" questions, but is really "telling" the woman what's going on.