From today you can use your mobile to pay in shops, if you have got an iPhone.
Apple Pay is now operating in Ireland meaning that Mastercard customers simply swipe their phone at the checkout.
Security concerns are being allayed with promises that card numbers aren't stored on the device.
Instead, a unique Device Account Number is assigned which is then encrypted and securely stored in a secure element on your device.
To use this function you will need an iPhone 6 or newer. It can also be used with iPad, MacBooks from 2012 onwards and all Apple Watches.
Conor McCann from Coffee Angel in Dublin says people have already been using the service this morning.
“Everyone has their phone with them. No one has to bring coins or search through their pockets so it definitely helps. The future is getting rid of cash, cards and just having one thing, it’s much easier for everyone.”