Quote Originally Posted by GerH
Most of the time the cards have just passed their expiry date. It's common practice to manually put the cards through and just change the date on them.
Cards are also issued for each individual car so when the car goes the card goes but some cards stay on until a new card for the new car is delivered and the cards just haven't been swapped out
It's also common that the gaurds forget their pins for the cards
As this is a customer site and I know the card payment system and the card was in date and the pin correct.