Mobile technology that could render the wallet obsolete is taking off in the United States, but is unlikely to reach New Zealand until next year.
Google Wallet, which lets users makes purchases by swiping their smartphone at the checkout, went live in the United States on Monday.
The service works by using a near-field communication (NFC) chip inside a smartphone, which is linked to a customers' credit card account.
NFC is technology that allows information to pass from one device to another when they are near each other.
It is regarded as safer than Bluetooth for transferring personal data as it has a much shorter range, reducing the risk of information spilling into the wrong hands