An interesting Octopus Card use

Last Wednesday I was hanging around Mongkok with a friend when we decided to enter in a cinema to watch "Wolverine" (great movie by the way). Nothing special to that except that the payment process was quite interesting.

Indeed, instead of going to the cashier (before a long line) we went to use the electronic one. With the help of a touch screen, I quickly chosen the movie to see and instantly paid with my Octopus card ( a widely used contacless card in Hong Kong for translation or small payments). The whole process took 10 sec and 1 minute later I already was in the theater, amazing isn't it?