These are all the places you can use Apple Pay

Editors' Note: This piece was originally posted on October 20, 2014, and will be updated periodically.

At its annual WWDC developers conference today, Apple announced a number of key expansions to its digital payment system, Apple Pay. Originally launched in the US on October 2014, the platform will be in 1 million locations across the country by next month, and will roll out to the UK in July.

Created to streamline and simplify transactions, the service works similarly to Google Wallet, allowing iPhone 6 and 6 Plus users to pay for products through their handsets.

In-store purchases can be carried out with the smartphones' NFC chips (the same one that Apple Watch owners can also use), while app purchases can be executed and verified through a user's Apple TouchID fingerprint. Other TouchID-enabled devices, like the iPad Air 2 and Mini 3 , can pay for in-app transactions too, thanks to iOS 8.1 . With the recent iOS 9 update , users can also consolidate loyalty and rewards cards.

For a complete list of national businesses where you can use Apple Pay in the US, check out the chart below.

*Coming soon

Apple WWDC 2015 keynote (photos)

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