ANZ has suffered its second technical outage in as many months as a system glitch knocked out eftpos and credit card transactions across the country for three hours on Tuesday.
ANZ has yet to explain the cause of the glitch, which left retailers unable to process eftpos and credit card transactions between 11 am and 2 pm.
The Australian bank's branches and ATMs were unaffected by the cut-out.
The bank says the black-out was unrelated to the two-hour communications failure that knocked out its Internet, eftpos and ATm networks in June. This followed an earlier failure the previous week when a faulty disc at its Melbourne data centre killed its Internet and call centre facilities for the best part of a day.
In the UK, a systems glitch left Barclays customers unable to access their accounts online or use cash machines on Saturday.