The wet footprint test involves stepping barefoot in water, then walking naturally over a strip of paper towel.

At the first we were stopped at the door, handed a soggy strip of paper containing a barcode and told to photograph it with our mobile phones.

Patrons must stand in front of the device, remove glasses and hat and then wait a few seconds for a strip of paper up to 75cm long to spool out.

The cash totaliser was a long strip of paper which ran out of the studio and along the adjacent corridor walls.

This camera took pictures 1.5 x1, that came on a pull-out strip of paper.