In the U.S., Walmart has made the process even faster by replacing the scanner with a mobile app. Customers in more than 20 participating locations can now use it to both scan and pay for their items on their smartphones. They get to bypass checkout and just have to show their receipt to an "exit greeter". Walmart Canada also aims to offer customers the app, which is catching on with some U.S. shoppers.
"It was awesome. I didn't have to stand in line, which is the wors[t] part of Walmart. I didn't talk to a single worker," posted Nate Look on Facebook this month.
But others fear the technology will lead to the demise of the cashier, forcing shoppers to do all the work.
"I don't support scan and go," posted Brenda Hauglum. "People need jobs."
Even though Schnurr likes scan and go, she too is concerned about putting cashiers out of work, so she always goes to one to pay her bill.
"I don't want to make them completely redundant, so by going to the cashier I don't feel as bad," Schnurr said.
According to Walmart Canada, scan and go has not resulted in any job losses and the retailer is offering it purely to make shopping more convenient.
"It's a customer service initiative," said spokesperson Alex Roberton.
There's no doubt stores are moving increasingly toward automation. By the end of 2016 there were 255,000 self-checkout machines in stores around the world. That number is expected to reach more than 400,000 by 2022, according to London-based research and consulting group RBR. Companies are also rushing to find other ways to automate the shopping experience. Amazon is running a pilot project, Amazon Go, at a grocery store it has set up in Seattle. Shoppers don't even need an app — they just take what they want and walk out, thanks to technology that detects when products are removed from store shelves. Customers are billed via their Amazon accounts. But Field Agent's Doucette warns we're a long way off from a cashier-less world. Amazon Go is still in its testing phase and is currently only open to employees.