http://www.abc.net.au/news/2011-03-01/cash-spews-out-of-commonwealth-atms/1962848 http://www.abc.net.au/news/2011-03-01/cash-spews-out-of-comm... I studied ATM

http://www.abc.net.au/news/2011-03-01/cash-spews-out-of-commonwealth-atms/1962848 http://www.abc.net.au/news/2011-03-01/cash-spews-out-of-comm... I studied ATM's at Uni, and they have been like that for over 26 years. As someone else on the thread pointed out, they do authenticate you, and record the transaction in a aci(Durable!) database before they give you money. But the system clearly has a degraded mode when the exact balance is unavailable. Also why do you need a balance to process a deposit?