Visual recap of order at box office counter

Hi all,

When someone comes to to the box office to purchase tickets, do you offer a visual recap of the order in addition to speaking "you are purchasing 2 ad/2ch tix to this event at this date and time" etc?  I'm told it's California consumer law, and it's something we're looking at replicating here.  For anyone that does this- do you just turn your computer monitor around, or do you have a second screen that just flashes up the relevant information to the customer?

Thanks!
Kathleen