0 points
What exactly does the bar code encode? I suppose it must be the unique identifier of the receipt. Can you look it up on the web? Or is it only useful to the employees of the store?
-1 points
Assuming that the Norwegian system is in anyway similar to the Finnish system I use, they just print the system id and the n:th of you on a piece of receipt while the system just checks that no similar register/customer id’s have passed.
We tested this with friends where multiple friends bought stuff from the same register, but exited using only a single one and they were usable afterwards, but only once per.
