Square says the system is flexible, so a coffee shop, for example, could have a single QR code in its window that people would scan and then wait for their drink. QR codes have become one of the ...

Square Inc.’s announcement Tuesday of its new QR code service for restaurants helps bring the contactless ... Shift4 Payments Inc., for example, this summer introduced QR Pay, a service that directs ...

To pay at Starbucks, customers simply need to open the Wallet app and scan their QR code at the ... So, for example, after I recently purchased an item via Square at Starbucks, the Wallet app ...

Printed onto that square is a QR code — that square digital bar code you can scan with a smartphone. Miller peels off the back of her square to expose the adhesive and pushes it into place.