With some folks yesterday and, one by one, they were wearing a contraption over their eyes, and looking around at I knew not what, and reacting to what I couldn't imagine.
Finally they put it on me, and it was like being in the middle of a nightmare, with weird things happening all around, including behind and above and below!
Apparently the contraption was only about £12.00 and with a simpler cardboard option of less that a fiver!
The key to it all was a suitable mobile and a downloaded app.
Don't know whether there are other programmes to download, but it was truly incredible!