The opening of the Amazon Go store was a monumental shift in the way we shop. For the first time, we saw what it looked like for a store to be entirely driven by technologies. We have also seen this concept of cashierless store technology in action through self-checkout kiosks at places like Walmart and other retail stores around the world. The entire retail industry is shifting to a model where cashiers are no longer needed. While these solutions are complicated to implement, they are still within reach for most retail companies.

Walmart's membership-only retail warehouse chain is prepping to take on Amazon with the launch of a new concept store that has no cashiers or registers. A Sam's Club in Dallas, Texas is testing a new store format where shoppers use an app to buy groceries without the need to stand in a checkout line, according to CNBC. The concept closely mirrors Amazon Go, the cashier-less stores launched last year by the internet giant. A Sam's Club in Dallas, Texas is testing a new store format where shoppers use an app to buy groceries without the need to stand in a checkout line or deal with cashiers The 32,000-square-foot store is smaller than other Sam's Club locations and mostly features basic food items like produce, meat and alcohol. For now, it's rolling out for select customers, but the firm expects to expand soon, CNBC said.