Petrol pump accepting charge card - has amount connected over network to central account and user is periodically charged

摘要

Petrol pump (3) accepts a personal card (at 10) before petrol is given. The card can be of two forms. In one case, the card can be loaded with money at a paying-in machine. The amt. for the petrol is then directly debited from the card. In the other case the amt. device is connected over a network to a central account. This is debited and the user periodically charged. ADVANTAGE - Labour redn., ease of use.