That's exactly how it works. The numbers are hashed by the receiver and uniquely...

jamesbrownuhh on April 22, 2015 | parent | context | favorite | on: Why do pub TVs have a pint glass in the corner?

That's exactly how it works. The numbers are hashed by the receiver and uniquely identify that particular viewing card, then displayed in a position selected by the channel operator, when triggered at a time of their choosing.