As noted above, there was no physical "Chokey" device in the Broadway production, but there was a rather elaborate display of green lasers that were projected all around the theatre to suggest a sort of "virtual" cage (as least that's what I got out of it). It was a surprisingly non-literal concept for a show that was otherwise presented with mostly physical sets and props.
==> this board is a nest of vipers <==
"Michael Riedel...The Perez Hilton of the New York Theatre scene"
- Craig Hepworth, What's On Stage