In order to access the new feature, users must download the free iOS 8.1 update, which can be accessed in the Settings menu.
After downloading the update, users must open “Passbook & Apple Pay” and set up your credit/ debit card information by either using the camera or manually inputting it in, USA Today reports.
Apple notes that using Credit when purchasing items is recommended because it is the “most consistent Apple Pay experience,” adding that some companies payment systems might not always work correctly when using Debit.
Over 500 banks have signed on to participate in the service, though only American Express, Bank of America, Capital One, Chase, CITI, and Wells Fargo are the only ones available right now.
Apple notes that Barclaycard, Navy Federal Credit Union, PNC, USAA, and USbank will be “coming soon.”
There are over 220,000 stores accepting the new mobile payment, with many more expected to be participating in the future. Some of the major retailers participating in the service are Macys, McDonalds, Nike, Petco, Sephora, ToysRUs, Walgreens, and Walt Disney World.