What I'm saying is we had a deployment in a large facility. It was a partnership with the org that owned the facility to allow us to use their location as a real-world testing area. We're talking about multiple buildings, multiple locations, and thousands of people (all aware of the system being used).
Two of the employees were twins. It wasn't planned, but it did give us a chance to see if twins were a weak point.
That's all I'm saying. It's mostly anecdotal, as I can't share details or numbers.