If we went to card fobs or digital payments... can this be linked to the trucks GPS to stop improper use of the card or Q code/bar code?

We believe the solution we would like to develop with your support will be cheaper for councils and less complex for users. The broader digital payments model we have been discussing with customers is the idea of a customer (or service centre) printed QR code which is self-serviced online through the council website. This is similar to getting a cinema ticket online. Our system would check the entitlements by property/user and issue accordingly. When the resident/commercial customer arrives at the weighbridge it would be scanned, and that unique transaction of customer/weight/image capture would be recorded, and the database updated for reporting and entitlement adjustment.