Ticket Machines like what you see at T&W Metro Stations across the region, but at Bus Stops/Bus Stations.

So basically you could walk to your local stop knowing your Bus is a few minutes away, Purchase your Ticket from the Machine and show the Driver upon boarding the Bus, this would result in faster Vehicle Loading Times and in turn likely improve Reliability of all Bus Services across the Region.

With regards to Smart Cards, you would still have to scan them on the Machine on the Bus, Single Fares would also only be available from the Driver also.