At the Scotiabank Saddledome in Calgary, sports fans looking to buy a refreshment without missing much of the action can now pop into a store on the arena’s main concourse, scan a credit or debit card, take what they want and leave.

Same goes for Scotiabank Arena in Toronto. At two locations in the building, patrons can pick up a snack or drink without interacting with a cashier or scanning their purchases, completing their transaction instead through Amazon’s Just Walk Out system.