Walmart introduced Walmart Pay - a new payment app that will allow consumers to pay for their purchases with a scan of their phones in Walmart stores.

The smartphone-based payment system uses QR technology rather than the near-field communication technology, or NFC, used by the payment systems of players like Apple and Google.

Walmart Pay works with any iOS or Android device, at any checkout lane, and with any major credit, debit, pre-paid or Walmart gift card. Customers will be able to set the feature to prioritize payments using only say gift cards and use credit and other cards as the second payment option. They can also set the app to pay by a combination of cash and Walmart Pay.

The mobile payment feature will be introduced in select stores beginning this month.

App features include checking in to pick up an online order at a Walmart store, refilling pharmacy prescriptions and finding an item's store location.

Using the app and the camera of a smartphone, users should scan the code displayed at the register to connect the payment app and complete the transaction. An e-receipt is archived in the app.

After activating the camera, consumers scan the product code displayed at the register to connect the payment app and complete the transaction.