mattwnz:SATTV: Just bring out the zip zap machines and do manual transactions, a bit of a pain but at least you get the sale.
Most people dont realise that you can do a zip zap for eftpos but you can.
Although what happens if someone uses a cancelled eftpos card or overdrawn, which would have failed if done electronically . Also people could use a card they have found, as some eftpos card don't have a signature field on the back. Who wears the loss, the bank or the retailer?