ASB customers will soon be able to ditch their wallets and pay for small purchases with their phone by attaching a sticker.
The bank will launch a trial next month for its new PayTag service which uses the Visa paywave technology already available on credit cards.
The technology allows people to pay by waving their card or phone over an eftpos terminal without having to enter a pin number or sign for purchases up to the value of $80.
Russell Jones, ASB's executive general manager, technology and innovation, said PayTag would have the same security protection as credit cards.
"Security remains the most important priority for ASB. As with all our credit card transactions, ASB PayTag transactions will be protected against fraud, effectively making this new technology safer than carrying around cash."