A mobile banking service for Apple's iPhone has been launched in the UK.
Customers can use the MoBank system to make purchases and check bank balances online via the phone.
Users have a PIN and can instruct the system to authorise payments from their credit cards.
MoBank was set up in 2007 by former First Direct and Egg bankers.
The software can be downloaded from the Apple iTunes Apps Store or on the MoBank website. "You then register your debit or credit card, get a secure MoBank PIN, and start to MoBank," said MoBank in an interview with The Guardian.
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Mobile banking is set to be the most widely used banking channel in the UK, according to a survey of 1,000 people.
It looks likely to achieve the fastest rate of mass-market penetration in history, even outpacing banking channels like credit cards, ATMs and online banking, according to the research from the Future Foundation and mobile money specialist Monitise.
E-bank Japan is an example of a bank that already lets its customers do everything from a mobile device. It has no branches or ATMs.