(23 Jul 2019, 2:05 am)omnicity4659 wrote
It's not difficult as Arriva had the machines updated (hence why they no longer rip QRs) to make sure that reused returns got rejected, it's the same at a few other companies too.
I'd assume it makes it easier to identify travel patterns with the QR too. Whether this was to work out the time of the return trip or to try and identify if everyone who bought a return, ended up using the second portion and if not, why not? (there's nowt worse than missing that last bus unexpectedly and seeing the standard 'not enough demand for a later bus' trotted out).